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another term for initial orientation to | Some employers refer to this time period as a training period, orientation period, initial employment period, or even a âfamiliarizationâ period. In addition, your introductory period policy also should contain an âat-willâ statement. | Orientation. Itâs weird how words change meaning over time; the way the descriptive meaning of a word (the meaning of word as itâs currently used) overtakes the prescriptive meaning (what we might call âthe dictionary definitionâ of a word). For instance, âliterallyâ now means âfigurativelyâ.Iâm not thrilled with the examination they gave you at the airport. In fact, they rarely go through so stringent a screening with ALTs for Mahoutokoro. But this year is special and there will be heightened security measures at the school for the foreseeable future. | eng_Latn | 6,800 |
is Wiley is enough to pass Cma | Description. The only IMA-approved study system for the CMA certification exam. Wiley CMA Learning System Exam Review 2014 + Test Bank provides you with a complete textbook plus one-year access to our exclusive online test bank containing over 900 multiple-choice questions.et ready for Test Day. Packed with key formulas, knowledge checks at the end of each topic, study tips, and practice questions, Wiley CMA Learning System equips you to easily pass the CMA Exam. | Dr. Wiley's. experience matches your search based on the following criteria:Based on total number of patients treated over the last 12 months; Specializes in Family Medicine; Board certified in Family Practice; No malpractice claims found; No sanctions found; No board actions found | eng_Latn | 6,801 |
Ticketing Information Systems? | try:\nhttp://www.planet-source-code.com | I'm not aware of any websites. You need a pretty good understanding of Group Policy, Active Directory, etc. Try "Windows Server 2003 Administrator's Companion" by Microsoft Press. | deu_Latn | 6,802 |
can i get instructions on installing oracle 9i along with backup and recovery steps? | go on their site and ask for instructions | There is a program, associated with the court system. It's called "Guardian ad Litem." They provide all the training you'll need. Call your local court-house, or look in the phone book. Good luck! | eng_Latn | 6,803 |
doca means what for imm | All subjects were studied on four occasions while they were in balance on a diet containing 150 mEq of sodium and 100 mEq of potassium daily: during a control period, following deoxycorticosterone acetate (DOCA) treatment for 24 hours (Cont + DOCA), during water immersion to the neck (immersion), and during water immersion following DOCA treatment (Imm + DOCA). | doctype (Noun) A directive that associates an SGML or XML document (such as a webpage) with a Document Type Definition, potentially affecting how it is parsed and rendered. Origin: From document type. | eng_Latn | 6,804 |
what is an indd file | INDD is a file extension for a page layout file used by Adobe InDesign, can also be opened using Adobe InCopy. INDD stands for INDesign Document. Contains formatting, content, styles, and linked files. Used for Desktop Publishing to create books, magazines, newpapers, flyers, etc. MIME type: application/octet-stream. Learn more about .INDD files: Visit the Adobe Indesign web page. | An Investigator IND is submitted by a physician who both initiates and conducts an investigation, and under whose immediate direction the investigational drug is administered or dispensed. A physician might submit a research IND to propose studying an unapproved drug, or an approved product for a new indication or in a new patient population. Emergency Use IND allows the FDA to authorize use of an experimental drug in an emergency situation that does not allow time for submission of an IND. | eng_Latn | 6,805 |
how to use rsd extension | Insert the language data disc into the computer's disc drive. Double-click the Rosetta Stone desktop icon to run the application. Click the language you'll use to open the .rsd file, from the Language/Product menu on the left-hand side of the application window.Click the unit you'll use to view the lessons from the Unit menu.nsert the language data disc into the computer's disc drive. Double-click the Rosetta Stone desktop icon to run the application. Click the language you'll use to open the .rsd file, from the Language/Product menu on the left-hand side of the application window. | When prompted, click on open to read the instructions. After you have. successfully installed the RSA Software token, please follow the setup steps below. Using Your SecurID for the First Time: (If you have any problems, please call the hospitalâs Information Services (IS) Service Desk at extension. | eng_Latn | 6,806 |
define active directory group | Active Directory (AD) is a directory service that Microsoft developed for Windows domain networks. It is included in most Windows Server operating systems as a set of processes and services. Initially, Active Directory was only in charge of centralized domain management. | Active Directory Domain Services (AD DS) is a server role in Active Directory that allows admins to manage and store information about resources from a network, as well as application data, in a distributed database. | eng_Latn | 6,807 |
what is an ldom | Oracle VM Server for SPARC. Logical Domains (LDoms or LDOM) is the server virtualization and partitioning technology for SPARC V9 processors. It was first released by Sun Microsystems in April 2007. After the Oracle acquisition of Sun in January 2010, the product has been re-branded as Oracle VM Server for SPARC from version 2.0 onwards. | What is LDAP? LDAP, Lightweight Directory Access Protocol, is an Internet protocol that email and other programs use to look up information from a server. LDAP is mostly used by medium-to-large organiÂzations. If you belong to one that has an LDAP server, you can use it to look up contact info and the like. | eng_Latn | 6,808 |
what is interactive logon access | Interactive logon is mandatory in the Windows Server 2003, Windows XP, Microsoft Windows 2000, and Windows NT 4.0 operating systems. Interactive logon provides a way to identify authorized users and determine whether they are allowed to log on and access the system. | The DS Logon Account Request Portal Step-by-Step Process. ï On DS Access homepage, Select Activate a DoD Self Service Logon to begin. The DS Logon Account Request Portal Step-by-Step Process. ï Enter name, DOB, SSN and the one-time activation code you wrote down earlier. | eng_Latn | 6,809 |
what is ad | The meaning of AD is Anno Domini or Year of our Lord referring to the year of Christâs birth. The meaning of BC is Before Christ. CE is a recent term. It refers to Common Era and is used in place of A.D. the dates are the same i.e., 2009 AD is 2009 CE. | Active Directory (AD) is a directory service that Microsoft developed for Windows domain networks. It is included in most Windows Server operating systems as a set of processes and services. Initially, Active Directory was only in charge of centralized domain management. | eng_Latn | 6,810 |
what is odp | Operating department practitioners (ODPs) are a type of health care provider involved with the overall planning and delivery of perioperative care. | - lots of other apps. âODFâ is the format used by office suites like OpenOffice and LibreOffice. Text documents (.odt), as well as spreadsheets (.ods) and also presentations (.odp) are supported, including support for complex formatting and embedded images. Graphs are no problem either. If you want to secure your data you can even open password-protected documents. This app is open-source. | eng_Latn | 6,811 |
Cite an Annual Report in APA Style | APA style is a writing format created by the American Psychological Association. It is used primarily in the behavioral and social sciences, but is also used in graduate and post-graduate study, not-for-profit organizations and for-profit businesses in the medical and social services arenas. | If you haven't filtered out your own IP in Google Analytics, your reports are probably way, way off. Analytics only help if they're accurate, and they're only accurate if you are only tracking the behavior of real users. | kor_Hang | 6,812 |
what is apa organization | The American Psychological Association (APA) is a scientific and professional organization that represents psychologists in the United States. | APA, also known as American Psychological Association, is a citation style used to attribute sources when writing a formal document or paper. Normally, when you cite using APA format, you would include short quotations directly in the body of the text. However, if you are citing a paragraph that is longer than 40 words, you must create a free standing block quote to separate the paragraph from the rest of the document. | eng_Latn | 6,813 |
Radiation Hard X-Band Phase Locked Loop and Transceiver in 0 . 25 μ m SiGe Technology | A set of integrated circuits for 60 GHz radio front-end | Intestinal Tumorigenesis Is Not Affected by Progesterone Signaling in Rodent Models | eng_Latn | 6,814 |
LED Arrays Fabricated without Wire Bonds | Monolithic matrix-addressable AlGaAs—GaAs array | Bond strength of brackets bonded with an adhesion promoter | eng_Latn | 6,815 |
Two-Beam Ku-Band Oscillator-Amplifier Using a Planar Helix Slow-Wave Structure | Effective Dielectric Constant Method for a Planar Helix With Straight-Edge Connections | 101 Flux Decline in Ultrafiltration Processes | ast_Latn | 6,816 |
Reply to the Comment on "Electric Field Scaling at a B=0 Metal-Insulator Transition in Two Dimensions" | We note that data on Si/SiGe heterostructures, reported in the Comment of Ismail et al. (cond-mat/9707061) on our recent Letter (cond-mat/9608101), are insufficient to establish the claim for a transition to a metallic phase. | Bandwidth is a key concern in the design of microstrip antennas since the high-Q nature of microstrip antennas makes them inherently lower bandwidth structures. An analytical expression for the impedance bandwidth of a linearly polarized (LP) microstrip antenna is well known. Approximate numerical results for the axial-ratio (AR) and impedance bandwidth of a single-feed circularly polarized microstrip antenna have also been obtained previously and reported in the literature. However, closed-form expressions for these bandwidths have evidently not been available previously. This work presents simple, analytical expressions for the axial ratio and impedance bandwidth of a single-feed circularly polarized (CP) microstrip antenna of arbitrary shape, in terms of Q. In addition, the receive-power bandwidth for microstrip antennas that are either linearly or circularly polarized is derived, and closed-form expressions are obtained. | eng_Latn | 6,817 |
Antenna Patch Design Using a Photonic Crystal Substrate at a Frequency of 1.6 THz | In this paper, the design of a macro strip patch antenna with a photonic crystal structure has been studied. The purpose of this study is to create a photonic band gap (PBG) structure that can be used to design macro strip antennas. With this method, we can increase the bandwidth several times and increase the antenna’s gain. The noise and radiation loss of the antenna will also be significantly reduced by the use of PGB technology. The bandwidth of the antenna is 0.6 GHz to 1.6 THz. At 1.4 THz, the gain is 7.703 dB. This antenna is widely used in high frequency microwave transmitter and microwave receiver systems. | This work presents three improved plasma display panel (PDP) sustainers for reducing current stress and nonlinear effect due to parasitic and distributed components. In the paper, a useful cell equivalent circuit model is first introduced to describe the behavior of PDP cell operation, and a widely used sustainer is then reviewed, on which three improved ones are proposed. The proposed sustainers can reduce currents through the switches and nonlinear effect due to parasitic and distributed components along the energy-recovery circuit paths. Derivation and operating principle of the proposed sustainers are addressed in detail. In addition, their related gaseous discharge mechanism in PDP cells is also presented. Hardware measurements have verified the feasibility of the proposed sustainers. | eng_Latn | 6,818 |
Design of a single-feed all-metal 63 GHz Fabry-Perot cavity antenna using a TL and a wideband circuit model | In this paper, we show a wideband transmission line (TL) model for a Fabry-Perot cavity (FPC) antenna which is designed at a center frequency of 63 GHz using a thick and slotted metallic partially reflective surface. Then, by using the proposed wideband circuit model, we predict the gain and 3dB gain bandwidth of the antenna, assumed as infinitely large in the transverse domain (for the modeling purposes). Finally we compared the circuit model results to the full-wave ones for a FPC antenna of finite extent. | The realistic description of FELs operating in the high-gain regime has to be based on a three-dimensional theory. The dependencies of the electron beam current density and of the light wave on the transverse coordinates x and y must be taken into account. Betatron oscillations of the electrons and diffraction of the light wave play an important role. Moreover, energy spread in the electron beam and the longitudinal slippage of the FEL pulse with respect to the short electron bunch must be considered (in the 1D theory as described in Chaps. 4 and 5 the bunch is treated as being infinitely long, which is far from reality). | eng_Latn | 6,819 |
Gain improvement for conventional rectangular horn antenna with additional EBG structure | Gain enhancement for conventional circular horn antenna by using EBG technique | Microtubule capture by CENP-E silences BubR1-dependent mitotic checkpoint signaling | eng_Latn | 6,820 |
WAN antenna design for mobile phone with closed metal frame | Integrated Metal-Frame Antenna for Smartwatch Wearable Device | Integrated Metal-Frame Antenna for Smartwatch Wearable Device | eng_Latn | 6,821 |
Compact and Sharp-Rejection Bandstop Filter Using Uniplanar Double Spiral Resonant Cells | Novel U-slot and V-slot DGSs for bandstop filter with improved Q factor | A Novel Ultra-Wideband Monopole Antenna with Band-Stop Characteristic | kor_Hang | 6,822 |
Eight-Way Substrate Integrated Waveguide Power Divider With Low Insertion Loss | Enhancing the performances of H-plane SIW horn antennas | Completely Stale Transmitter Channel State Information is Still Very Useful | eng_Latn | 6,823 |
New Negative Coupling Structure for ${K}$ -Band Substrate-Integrated Waveguide Resonator Filter With a Pair of Transmission Zeros | NEW NEGATIVE COUPLING STRUCTURE FOR SUBSTRATE-INTEGRATED CAVITY RESONATORS AND ITS APPLICATION TO DESIGN OF AN ELLIPTIC RESPONSE FILTER | Completely Stale Transmitter Channel State Information is Still Very Useful | eng_Latn | 6,824 |
Laparoscopic adjustable gastric banding | A simple laparoscopic method to provide access to the gastroesophageal junction in obese patients | Dual-band Millimeter-Wave Microstrip Patch Array Antenna for 5G Smartphones | eng_Latn | 6,825 |
Design of a low SAR multiband antenna for mobile applications | A small tunable multiband antenna with parasitic elements for mobile applications | Wideband and multiband CMOS LNAs: State-of-the-art and future prospects | eng_Latn | 6,826 |
Ultra-compact dual-polarised UWB MIMO antenna with meandered feeding lines | VERY COMPACT 5.5 GHZ BAND-NOTCHED UWB-MIMO ANTENNAS WITH HIGH ISOLATION | Microtubule capture by CENP-E silences BubR1-dependent mitotic checkpoint signaling | eng_Latn | 6,827 |
Novel structure and design of compact UWB slot antenna | A Structure and Simulation-Driven Design of Compact CPW-Fed UWB Antenna | 0.18 μm CMOS Power Amplifier for Ultra-Wideband (UWB) System | eng_Latn | 6,828 |
In this paper, a flexible composite broadband dipole antenna printed with silver nanoflakes is presented. The antenna is composed of two identically printed split-ring resonators surrounding each arm of a printed dipole element. Each arm of the dipole and the split-ring resonator to which it couples is printed on the top and bottom sides of a thin dielectric substrate to give the antenna its flexibility. The compact antenna has overall dimensions of $10\ \mathbf{mm}\times 74.8\ \mathbf{mm}\times 0.254\ \mathbf{mm} (0.063\boldsymbol{\lambda},\times 0.473\boldsymbol{\lambda}\times 0.0016\boldsymbol{\lambda}$ at 1.9 GHz). The thin, flexible antenna produces stable, linearly polarized radiations in a broad bandwidth. Two antennas printed with copper and silver nanoflakes on a thin dielectric substrate were studied and their characteristics were compared. The printed antenna with copper cladding had a fractional bandwidth of 52.63%, peak gain of 2.14 dBi, and radiation efficiency of > 92%. The printed antenna with silver nanoflakes had a fractional bandwidth of 48.14%, peak gain of −0.78 dBi, and radiation efficiency of > 15% within the impedance bandwidth. | A broadband, low-profile, compact, and cost-effective antenna consisting of a printed dipole loaded with split-ring resonators (SRRs) is presented. The antenna consists of two identical printed SRRs, each enclosing an arm of a printed dipole element. Each SRR and the center-fed half-wavelength dipole element are printed on the top and bottom sides of a thin dielectric substrate. The dipole is excited by a coaxial feed, while the SRRs are electromagnetically coupled to the dipole. The dipole, in conjunction with the SRRs, generates three resonant modes with stable omnidirectional radiation patterns. These resonances interact to provide broadband characteristics, that is, a measured impedance bandwidth covering 1.32–2.46 GHz for a reflection coefficient of less than −10 dB. The functionalities, mechanisms, and modes of operation of the composite antenna structure are discussed in relation to both the dipole and the SRRs. A prototype is fabricated and measured in order to validate the antenna design. It is computationally and experimentally confirmed that the antenna demonstrates broadband characteristics as well as a stable gain with non-deteriorating omnidirectional radiation patterns. The compact antenna, which has the overall dimensions of 9.6 mm $\times$ 74.4 mm $\times$ 0.508 mm ( $0.06\lambda \times 0.469\lambda \times 0.0032\lambda$ at 1.895 GHz), has a measured fractional bandwidth of 60.31%, an omnidirectional radiation pattern with a gain greater than 1.8 dBi, and a radiation efficiency greater than 88% within a broad impedance bandwidth. The compact size, simple structure, and stable radiation properties of the antenna render it suitable for many wireless communication applications. | We prove that groups acting geometrically on delta-quasiconvex spaces contain no essential Baumslag-Solitar quotients as subgroups. This implies that they are translation discrete, meaning that the translation numbers of their nontorsion elements are bounded away from zero. | eng_Latn | 6,829 |
An analytic expression for the effective dielectric constant and impedance of a coplanar waveguide with finite grounds and embedded in a dielectric (ECPWFG) has been developed for the first time. Limiting examples of the expression are compared to known accurate results for standard CPW structures, of which excellent agreement is obtained. | General techniques to improve the microwave performance of plastic leaded packages have been developed. These techniques result in an improvement of the bandwidth and reduction of losses in the structure. The techniques were applied to an SSOP8 configuration, and the useful frequency range was extended from 6 GHz to well above 10 GHz. | Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights. | eng_Latn | 6,830 |
In this article, design of a microstrip ring-like diplexer for Bluetooth and ultrawide band application is presented. Two ring-like bandpass filters, operated at 2.4 and 4 GHz, are combined together to form the proposed microstrip diplexer. Several transmission zeros located at the passband edges are introduced to improve the passband selectivity. High isolation between the two passband greater than 28 dB is achieved in this study. The designed diplexer is investigated numerically and experimentally. Measured results show a good agreement with the simulated analysis. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 1518–1520, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24358 | In this paper, a compact and high isolation microstrip diplexer is designed for broadband and wireless local area network (WLAN) application, simultaneously. The bandpass fllter (BPF) for broadband channel is formed by three-coupled-line structure and two short stubs with difierent size loaded in 50› feed lines, and the BPF for WLAN channel consists of two coupling quarter-wavelength resonators (QWR) and one open stub loaded in short parallel-coupling feed structure. Multiple transmission zeros can be generated due to their intrinsic characteristics, so the broadband BPF with sharp skirt and wide upper-stopband performance and the WLAN BPF with sharp roll-ofi and lower-stopband characteristic can be realized. The tapped stub not only can generate new transmission zeros to deepen the stopband, but also can connect other BPF as an its part without deterioration of in-band performance. Hence, a compact microstrip diplexer combines of two BPFs without the extra junction matching network. The mutual loading efiect approximately equivalent to a coupled QWR can also generate new transmission zero at the passband edge to improve the isolation. A microstrip diplexer with the 3dB fractional bandwidths (FBW) of 80% for broadband channel and 5% for WLAN channel is designed and fabricated. Good agreement between the simulated and measured results is observed. | By using a superluminescent diode as the light source and a depolariser inside the fibre coil, a constant scale factor is achieved without using polarisation control elements. For long-term behaviour an RMS-bias drift of 10 degrees/h is obtained. | eng_Latn | 6,831 |
A straightforward approach is proposed to retrieve the efiective electromagnetic parameters of a slab of bianisotropic material from the scattering parameters. We flrst obtain the values of the impedance and refractive index of a slab of metamaterial, followed by the deduction of the expressions for determining these electromagnetic parameters including permittivity, permeability and magnetoelectric coupling coe-cient. Then, comparisons between the results coming respectively from retrieval technique and analytical method are made. Finally, we demonstrate the properties of split-ring resonator materials in other two orientations with respect to the incident plane wave and apply the proposed method to anisotropic materials to reveal its generality. | Notice of Violation of IEEE Publication Principles "NIMS (Negative Index Mobius Strips): Resonator for Next Generation Electronic Signal Sources" by Ajay K. Poddar, Ulrich L. Rohde, Ignaz Eisele, Enrico Rubiola in the Proceedings of the 2016 IEEE International Frequency Control Symposium (IFCS), May 2016 After careful and considered review of the content and authorship of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE's Publication Principles. This paper contains copied text and figures from the original papers cited below. The original content was copied with little or no attribution (including appropriate references to the original author(s) and/or paper title). "Determining the Effective Electromagnetic Parameters of Bianisotropic Metamaterials with Periodic Structures" by Lei Chen, Zhenya Lei, Rui Yang, Xiaowei Shi, Jiawei Zhang in Progress in Electromagnetics Research M, 2013, pp. 79-93 "Arbitrarily Oriented Biaxially Anisotropic Media: Wave Behavior and Microstrip Antennas" by Jennifer Warzala Graham, in her Dissertation, Syracuse University, Electrical Engineering and Computer Science, May 2012 "Electromagnetic parameter retrieval from inhomogeneous metamaterials" by D. R. Smith, D. C. Vier, Th. Koschny, and C. M. Soukoulis, in Physical Review E, 71, 2005 "Determination of the effective constitutive parameters of bianisotropic metamaterials from reflection and transmission coefficients" by Zhaofeng Li, Koray Aydin, Akmel Ozbay, Physical Review E 79, 2009 "Theoretical investigation of Mobius strips formed from graphene" by Xianlong Wang, Xiaohong Zheng, Meiyan Ni, Liangjian Zou, and Zhi Zeng, in Applied Physical Letters, 97, 2010 "Microwave transmission through a two-dimensional, isotropic, left-handed metamaterial" by R.A. Shelby, D.R. Smith, S.C. Nemat-Nasser, S. Schultz, in Applied Physics Letters, January 2001, pp. 489-491 "Experimental observation of true left-handed transmission peaks in metamaterials" by K. Aydin, K. Guven, M. Kafesaki, L. Zhang, C.M. Soukoulis, E. Ozbay, in Optics Letters, 2004, pp. 2623-2625 "Contemporary notes on metamaterials" by M. Lapine and S. Tretyakov, in IET Microwave Antennas Propagation. Vol 1, Issue 1, March 2007 "A 96-GHz oscillator by high- Q differential transmission line loaded with complementary split-ring resonator in 65-nm CMOS" by Wei Fei, Hao Yu, Yang Shang, Deyun Cai, Junyan Ren in the IEEE Transactions on Circuits and Systems II, Express Briefs, Vol 60, No 3, 2013 "Characterization of CMOS Metamaterial Transmission Line by Compact Fractional-Order Equivalent Circuit Model" by Chang Yang, Hao Yu, Yang Shang, and Wei Fei, in the IEEE Transactions on Electron Devices, Vol 69, Issue 9, 2015 A novel NIMO (Negative Index Mobius Oscillator) circuit is reported for application in current and later generation communication systems. The NIMO circuit uses NIMS (negative index mobius strips) resonator for improving PN (phase noise) and FOM (figure of merit). The measured PN @ 10 kHz offset from the carrier frequency 28.5 GHz is -122 dBc/Hz with typical 10.56 dBm O/P power and 680 mW DC power consumption. The measured FOM for a 28.5 GHz signal source at 1 MHz offset is -226 dBc/Hz. The reported NIMO topology enables next generation energy-efficient signal source solutions in monolithic integrated circuit and surface mounted planar technology. | Notice of Violation of IEEE Publication Principles "NIMS (Negative Index Mobius Strips): Resonator for Next Generation Electronic Signal Sources" by Ajay K. Poddar, Ulrich L. Rohde, Ignaz Eisele, Enrico Rubiola in the Proceedings of the 2016 IEEE International Frequency Control Symposium (IFCS), May 2016 After careful and considered review of the content and authorship of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE's Publication Principles. This paper contains copied text and figures from the original papers cited below. The original content was copied with little or no attribution (including appropriate references to the original author(s) and/or paper title). "Determining the Effective Electromagnetic Parameters of Bianisotropic Metamaterials with Periodic Structures" by Lei Chen, Zhenya Lei, Rui Yang, Xiaowei Shi, Jiawei Zhang in Progress in Electromagnetics Research M, 2013, pp. 79-93 "Arbitrarily Oriented Biaxially Anisotropic Media: Wave Behavior and Microstrip Antennas" by Jennifer Warzala Graham, in her Dissertation, Syracuse University, Electrical Engineering and Computer Science, May 2012 "Electromagnetic parameter retrieval from inhomogeneous metamaterials" by D. R. Smith, D. C. Vier, Th. Koschny, and C. M. Soukoulis, in Physical Review E, 71, 2005 "Determination of the effective constitutive parameters of bianisotropic metamaterials from reflection and transmission coefficients" by Zhaofeng Li, Koray Aydin, Akmel Ozbay, Physical Review E 79, 2009 "Theoretical investigation of Mobius strips formed from graphene" by Xianlong Wang, Xiaohong Zheng, Meiyan Ni, Liangjian Zou, and Zhi Zeng, in Applied Physical Letters, 97, 2010 "Microwave transmission through a two-dimensional, isotropic, left-handed metamaterial" by R.A. Shelby, D.R. Smith, S.C. Nemat-Nasser, S. Schultz, in Applied Physics Letters, January 2001, pp. 489-491 "Experimental observation of true left-handed transmission peaks in metamaterials" by K. Aydin, K. Guven, M. Kafesaki, L. Zhang, C.M. Soukoulis, E. Ozbay, in Optics Letters, 2004, pp. 2623-2625 "Contemporary notes on metamaterials" by M. Lapine and S. Tretyakov, in IET Microwave Antennas Propagation. Vol 1, Issue 1, March 2007 "A 96-GHz oscillator by high- Q differential transmission line loaded with complementary split-ring resonator in 65-nm CMOS" by Wei Fei, Hao Yu, Yang Shang, Deyun Cai, Junyan Ren in the IEEE Transactions on Circuits and Systems II, Express Briefs, Vol 60, No 3, 2013 "Characterization of CMOS Metamaterial Transmission Line by Compact Fractional-Order Equivalent Circuit Model" by Chang Yang, Hao Yu, Yang Shang, and Wei Fei, in the IEEE Transactions on Electron Devices, Vol 69, Issue 9, 2015 A novel NIMO (Negative Index Mobius Oscillator) circuit is reported for application in current and later generation communication systems. The NIMO circuit uses NIMS (negative index mobius strips) resonator for improving PN (phase noise) and FOM (figure of merit). The measured PN @ 10 kHz offset from the carrier frequency 28.5 GHz is -122 dBc/Hz with typical 10.56 dBm O/P power and 680 mW DC power consumption. The measured FOM for a 28.5 GHz signal source at 1 MHz offset is -226 dBc/Hz. The reported NIMO topology enables next generation energy-efficient signal source solutions in monolithic integrated circuit and surface mounted planar technology. | eng_Latn | 6,832 |
Antenna-coupled TES Arrays For The BICEP2/Keck and SPIDER polarimeters | A ug 2 01 2 BICEP 2 and Keck Array operational overview and status of observations | SNARE Function Is Not Involved in Early Endosome Docking | eng_Latn | 6,833 |
Small Inverted-U Loop Antenna for Gps Application | A Planar WWAN/LTE Antenna for Portable Devices | All stabilizing controllers, feedback linearization and anti-windup: a unified review | eng_Latn | 6,834 |
Development of Wideband Microstrip Bandpass Filter Involved Defected Ground Structure | Planar Ultra Wideband bandpass filter using Defected Ground Structure | Handbook of microstrip antennas | eng_Latn | 6,835 |
Multiport network model analysis of second‐ and third‐order modes of rectangular microstrip antennas | Patch antennas based on a pair of DPS and SNG metamaterial | SNARE Function Is Not Involved in Early Endosome Docking | eng_Latn | 6,836 |
Parallel coupled microstrip and E-plane metal insert waveguide band-pass filter at W-band | Broadband Millimeter-Wave E-Plane Bandpass Filters | SNARE Function Is Not Involved in Early Endosome Docking | eng_Latn | 6,837 |
Microstrip ring resonator filter with inductively-compensated parallel-coupled feed and stepped-impedance design | Microwave activities in Thailand | Integrated Filtering Microstrip Duplex Antenna Array with High Isolation | eng_Latn | 6,838 |
A SIMPLE SIDE LOBE REDUCTION METHOD IN LINEAR PHASED ARRAY ANTENNA WITH UNIFORM AND NON UNIFORM WEIGHTING USING SLC IDEA | Design of 24GHz microstrip phased array antennas with low side-lobe | SNARE Function Is Not Involved in Early Endosome Docking | yue_Hant | 6,839 |
Miniaturizing a Microstrip Antenna Using Metamaterials and Metasurfaces [Antenna Applications Corner] | Hybrid Mode Wideband Patch Antenna Loaded With a Planar Metamaterial Unit Cell | Mdm2 promotes the rapid degradation of p53 | eng_Latn | 6,840 |
In this paper, a novel compact microstrip dual-band (DB) bandpass filter with high selectivity for wireless local area networks applications is proposed. The design procedure is based on unbalanced composite right/left-handed (UCRLH) transmission lines (TLs). The DB features can be achieved by unbalancing the CRLH transmission line. The necessary conditions to obtain a discontinuous transition between the left- and right-handed bands, intended to provide UCRLLH TL, are investigated. The application of this technique to design of compact DB filters is illustrated. The structure of the proposed DB filter is implemented by a series interdigital capacitor located between two microstrip lines that shorted to the ground plane by vias. The vias with microstrip lines acting as a shunt connected inductor while the series capacitor is realized by interdigital capacitor. The design procedure based on a simple equivalent circuit is also introduced. The proposed filter has advantages such as compact size, easy fabrication, high selectivity, low insertion loss, high return loss and, design flexibility. To validate the proposed technique, the proposed DB filter has been fabricated and tested. Good agreement has been found between simulation and measurement results. The total size of the proposed UCRLH DB filter is 0.17 λg × 0.048 λg, where λg is the guided wavelength of the lower pass-band. The size of the proposed DB filter is more compact in comparison with known similar filters. | In this paper, a microstrip dual-band bandpass filter (DBBPF) based on an octagonal loop resonator (OLR), tapered resonators and open bended stubs (OBSs) is designed and analysed. The proposed structure produces two passbands with the centre frequencies of 3.65 and 5.67 GHz. The marked advantages of the proposed filter are as follows: Two centre frequencies can be individually tuned. The bandwidth of the upper passband can also be controlled. Furthermore, the DBBPF benefits from an ultra-wide upper stopband from 5.9 up to 21 GHz with an attenuation level of higher than 20 dB and a small size of 0.21 λg × 0.26 λg, where λg is the guided wavelength at 3.65 GHz. The designed filter is horizontally and vertically symmetrical leading to a reciprocal S matrix. Other remarkable specifications of the proposed filter are the insertion loss < 0.62 dB, the return loss > 20.2 dB and sharp response. To provide an analytical description, the LC equivalent circuits of initial and main resonators are presented. Acceptable similarity between simulated and measured results verifies the design process. | ABSTRACTUNC-45A is an ubiquitously expressed protein highly conserved throughout evolution. Most of what we currently know about UNC-45A pertains to its role as a regulator of the actomyosin system... | eng_Latn | 6,841 |
In this paper, novel multilayer microstrip diplexer is presented for ISM band at 2.45 GHz and WiFi at 3.6 GHz. The receiver and transmitter filters of the diplexer are implemented using square loop dual-mode resonators. First, we propose the planar diplexer realized in one single PCB layer. In that way, the characteristic in both bands can be independently controlled by changing the resonator dimensions. Moreover, several transmission zeros are located at the passband edges resulting in improved passband selectivity. The multilayer modification is proposed as transition from coplanar to microstrip architecture in order to obtain high isolation between filters in different layers. By using the multilayer design the size reduction and wide passbands are achieved with isolation better than 20 dB. | This paper presents, for the first time, tunable dual-mode substrate integrated waveguide (SIW) diplexers with various single-ended (SE) or balanced (BAL) ports. Dual-mode diplexing reduces the required volume by half while signal routing is achieved by proper coupling sections. Furthermore, the SIW resonators result in low loss and wide tunability. This paper experimentally demonstrates three designs with SE–SE, SE–BAL, and BAL–BAL port configurations. The SE–SE, SE–BAL, and BAL–BAL diplexers can be tuned starting from 2.07, 2.2, and 2 GHz, respectively, with a tuning range of 45%, 57.2%, and 63.5%, respectively. The average measured insertion loss is 1.32 dB for the SE–SE, 1.95 dB for the SE–BAL, and 2.15 dB for the BAL–BAL. The average size of the diplexer is $55{\times} 55$ mm2. For the proposed SE–BAL and BAL–BAL diplexers, the measured in-band common-mode rejection is better than 40 dB throughout the tuning range. | By using a superluminescent diode as the light source and a depolariser inside the fibre coil, a constant scale factor is achieved without using polarisation control elements. For long-term behaviour an RMS-bias drift of 10 degrees/h is obtained. | eng_Latn | 6,842 |
A major drawback of current millimeter-wave technologies used for integration of phased arrays on a chip is low efficiency (5–10%) and consequently low realized gain. In this work, we present integrated antenna arrays on silicon that exhibit radiation efficiency of >80% at 60 GHz. This is achieved by suspending the radiating elements of a phased array in air using micro-electro-mechanical systems (MEMS) processes, effectively replacing a lossy silicon substrate (under each element) with air. In the latest design we used capacitive feeding with pin and patch height of 40 and 60 μm, respectively. Finite element simulation results verify the performance of the array. A finite array with 5×5 elements achieved −10-dB bandwidth of 1.7 GHz. Array is well matched at 60 GHz with S 11 <−19 dB. Maximum realized gain (at broadside) is 20 dBi with sidelobe level of −13.3 dB. The efficiency is calculated to be 89%. Integration of antenna on a chip, provides enormous advantage in miniaturization of the systems and is essential for next-generation active electronically scanned arrays. | This paper presents 5×5 aperture coupled microstrip patch phased array antenna with suspended radiating elements operating at 60 GHz. A novel microfabrication technique enables separation of radiating elements from a lossy substrate. It was found that suspended elements improve efficiency and scanning range without sacrificing gain of the array by decreasing trapped energy at air dielectric boundary (surface waves). The array has a bandwidth of 7.5 GHz (12.5%) and capable of scanning ±60° in both E and H planes. Total array efficiency is calculated to be >90%. Simulation results show 18.6 dB gain with −12 dB sidelobe level at boresight. Furthermore, array gain is 15 dB and 14.5 dB when scanning ±60° in E and H-planes, respectively. | We report nearly complete preservation of “spin memory” between optical absorption and photoluminescence under excitation >0.2 eV above the band gap in nanometer GaSe slabs. | eng_Latn | 6,843 |
This paper presents the design of an electronically scanning phased array antenna which is constituted using 130 RF MEMS capacitive switches conflated with a series of linearly placed micro strip rectangular inset feed patch antennas and a corporate feed network. The design and analysis is performed in Ansoft HFSS (version 13.0). As the urge of obtaining high radiation pattern, light weight, low cost and better performance over wide range of frequencies, the micro strip antennas is still in demand. A phased array antenna using high-Q metal-insulator-metal capacitors which are intended as loading elements in the phase shifter have been designed in this context. The simulated result sights the designed 4-bit DMTL phase shifter which provides nearly 22.5°/45°/90°/180° phase shifts for different combination of MEMS switches. The design is optimized for Ku band at 15 GHz and the return loss for the phased array antenna is annexed to be -27.41dB. A highly integrated structure has been designed on silicon substrate having an area of 3.1×1.9cm2 only. | 2-bit wide-band distributed coplanar-waveguide phase shifters have been developed on a 500-/spl mu/m quartz substrate for X- and Ka-band operation. The designs utilize microelectromechanical system (MEMS) switches in a distributed MEMS transmission line periodically loaded by MEMS switches and high Q (/spl ges/250 at 30 GHz) metal-air-metal capacitors. The MEMS switches are actuated by a /spl plusmn/20-V voltage waveform using a high-resistance bias line. Estimated spring constant and switching time is 30 N/m and 9 /spl mu/s, respectively. The Ka-band 2-bit design results in a reflection coefficient better than -11.5 dB, an average insertion loss of -1.5 dB and phase shifts of 0/spl deg/, 89/spl deg/, 180/spl deg/, and 270/spl deg/ at 37.7 GHz. The X-band 2-bit design results in a reflection coefficient better than -12.5 dB, an average insertion loss of -1.2 dB and phase shifts of 0/spl deg/, 94/spl deg/, 176/spl deg/, and 270/spl deg/ at 13.6 GHz. These results are very competitive with switched transmission-line and reflection-based phase shifters. The distributed design can be easily scaled to V- and W-band frequencies for wide-band low-loss performance. | We report on a direct measurement of a phase shift on a weak coherent beam by a single 87Rb atom in a Mach-Zehnder interferometer. By strongly focusing the probe mode to the location of the atom, a maximum phase shift of about 1 degree is observed experimentally. | eng_Latn | 6,844 |
Recently, low temperature co-fired ceramic (LTCC) technologies for low cost and small size packaging have been developed in the millimeter wave band. However, in case of designing the antenna of using LTCC substrate, it's difficult to meet the bandwidth specification for broadband wireless communication such as IEEE 802.15.3c 60GHz WPAN (Wireless Personal Area Network), which needs 7GHz bandwidth (57∼64GHz), due to the high dielectric constant of LTCC substrate [1]–[2]. Furthermore the radiation efficiency of the antenna becomes reduced due to the surface wave as the height of LTCC substrate becomes increased. Previously a perfect metal cavity backed antenna fed by a coaxial cable [3], antennas using photonic bandgap substrate [4] were proposed to improve the radiation efficiency. Recently, aperture coupling antenna using soft surfaces on LTCC substrate was proposed [5], but bandwidth of the antenna was narrow. | This paper presents the design of a microstrip grid array antenna and more importantly describes the integration of it into a grid array package in a low temperature cofired ceramic (LTCC) technology for highly-integrated 60-GHz radios. The grid array antenna package has a small volume of 13.5×8×1.265 mm3 and can house a 60-GHz radio die of current size. The microstrip grid array antenna package samples were fabricated and measured. Measured results show good agreement with simulated ones. It achieved good matching (|S 11 |=−10 dB), high efficiency (η>85%), and directional patterns with the main beam in the boresight direction from 57 to 64 GHz as well as high gain with the peak value of 14.5 dBi at 60 GHz. | ABSTRACTUNC-45A is an ubiquitously expressed protein highly conserved throughout evolution. Most of what we currently know about UNC-45A pertains to its role as a regulator of the actomyosin system... | eng_Latn | 6,845 |
A coplanar waveguide (CPW)-fed Archimedean spiral antenna with band notched characteristics is presented for ultra- wideband (UWB) applications. The proposed antenna consists of a two-arm spiral fed by a CPW line. The novelty of this design is integrating three inverted U-shaped slots within the feeding line of the spiral antenna to introduce frequency band notched characteristics at 5.8GHz. This antenna covers the frequency range from 3.1GHz to 10.6GHz with VSWR less than 2, except at a band rejection frequency of 5.8GHz. Simulated and measured data are presented to verify the proposed design. | In this article, a novel compact UWB antenna with 3.5/5.5 GHz band-notched characteristics is proposed. The proposed antenna consists of an opening elliptic annulus and two resonating structures. One is inserted into the terminal of the radiating patch, and the other is connected to the beginning of a radiating patch via two metallic holes. The measured impedance bandwidth defined by VSWR < 2 from 3 to 11 GHz, with the dual notched bands of 3.4–4 GHz and 5–5.9 GHz, is obtained. The proposed antenna is successfully simulated, designed, and measured with broadband matched impedance, good radiation patterns and constant group delay. Additionally, the conceptual equivalent circuit models, combined with input impedance, are also shown for further analysis of the band-notched characteristics. | United States Phillips curves are routinely estimated without accounting for the shifts in mean inflation. As a result, we may expect the standard estimates of Phillips curves to be biased and suffer from auto-regressive conditional heteroscedasticity (ARCH). We demonstrate this is indeed the case. We also demonstrate that once the shifts in mean inflation are accounted for, the ARCH is largely eliminated in the estimated model and the model defining expected rate of inflation in the New Keynesian model plays no significant role in the dynamics of inflation. | eng_Latn | 6,846 |
In this paper, we propose a theoretical model to estimate the resonance frequency and the magnetic polarizability of the square split ring resonators (S-SRR) having varying gap width within the rings. The model also predicts the quantitative change in polarizability depending on the geometrical orientation of the S-SRR. The computed results are verified with results obtained using an electromagnetic simulator. | A Multiple Input Multiple Output(MIMO) patch antenna array with 2 patch antenna elements is designed to operate at 2.4 GHz ISM band. The isolation between antenna elements is increased by reducing the mutual coupling with the help of metamaterial based Split Ring Resonator. The MIMO antenna has a dimension of $52.3 \times 128\times 1.6mm^{3}$ and the dimension of single patch antenna is $52.3 \times 62\times 1.6mm^{3}$. The proposed design minimizes the gap between individual antenna elements to $0.1\lambda$. With the insertion of three SRR unit cells between the patch antenna elements, a 5 dB improvement in the coupling isolation is achieved in the antenna array. The antenna system has a return loss of −19 dB with coupling isolation of −22.9 dB. The far field gain of the MIMO antenna array is 2.56 dBi at 2.4 GHz. | By using a superluminescent diode as the light source and a depolariser inside the fibre coil, a constant scale factor is achieved without using polarisation control elements. For long-term behaviour an RMS-bias drift of 10 degrees/h is obtained. | eng_Latn | 6,847 |
The main purpose of this paper is to numerically study the impact of various human body models on the performances of a dual-band antenna operating at 2.4 GHz and 5.5 GHz. The antenna characteristics have been investigated on two adult and two child anthropomorphic voxel models within the 2–6 GHz range. Variations of the antenna characteristics in terms of reflection coefficient S 11 , gain, efficiency, absorbed power, and 1g-averaged peak SAR are analyzed and discussed. | We investigate whether the presence of a human body in wearable communications should be considered as part of the radiating structure or as part of the local radio environment. The Rician $K$ -factor was employed as a quantitative measure of the effect of the user's body for five environments and two mounting locations. Presented empirical results indicated that the environment had a greater impact on the $K$ -factor values than the position of the transmit antenna for the ultrawideband signals used, confirming that the human body should be considered primarily as part of the overall radiating system when the antenna is worn on the body. Furthermore, independent variations also existed in the $K$ -factor values for the differing antenna-body mounting positions, indicating that as the position changed, then the radiating effects and the contribution from the body changed. This is significant for ensuring body-antenna systems are accurately modeled in system-level simulations. | This communication proposes a high-gain bow-tie antenna operating over the frequency band of 5.5–8 GHz. The proposed antenna is comprised of a microstrip-to-slot transition line connected to bow-tie radiators. Seven slabs of split-ring resonator (SRR) unit cells are integrated into the orthogonal plane of antenna substrate to enhance its gain. Each slab consists of $2 \times 7$ double-sided SRR unit cells. A prototype of the antenna is fabricated and measured. The results indicate that the reflection coefficient is better than −10 dB over the frequency band of 3.5–8 GHz. The measured antenna gain varies from 10.2 to 13.8 dBi over a frequency range of 5.65–7.8 GHz. The measured radiation efficiency corresponds to 90% at 7 GHz. The cross polarization is better than −30 dB in the $E$ -plane at 6.5 GHz. | eng_Latn | 6,848 |
A new band-notched ultra-wideband (UWB) bandpass filter (BPF) with an improved upper stopband is designed using a multi-mode resonator (MMR). The MMR, being a modified version of a common tri-section stepped-impedance resonator (TSSIR), is split at its two open ends with the input/output feed lines sandwiched in between to form an interdigital parallel-coupled configuration that results in stronger coupling. In addition, an extended coupling length in the second section of the TSSIR is featured to provide further coupling and impedance-matching tuning. With such a design strategy, coupling gaps of no smaller than 0.1 mm was achieved to obtain the required UWB response. In this design, the first five resonant modes of the MMR and the coupling peaks of the input/output parallel-coupled lines are properly located in the UWB passband to achieve a uniform in-band transmission response. Also, the spur lines and open-circuited stubs are implemented in the MMR to create a 5-GHz notched band and to broaden the upp... | This article presents a compact ultrawideband (UWB) bandpass filter (BPF) with sharp selectivity, wide notched-band, wide out-of-band rejection, and approximately flat group delay. The proposed filter structure is composed of a U-shaped open-circuited line that is interdigitally coupled to the input/output feed-lines using high impedance lines. The structure generates multiple resonant modes across the UWB span between 3.1 and 10.6 GHz, however, high coupling between the feed-lines and the U-shaped structure transforms the discrete resonant modes into an UWB BPF. Coupling is enhanced by inserting dielectric slots in the ground-plane immediately under the coupling-lines. A wide notched-band is implemented by introducing asymmetry in the coupled lines. This was achieved by making one of the coupling lines longer by folding it and extending the line to partially couple with U-shaped structure. The length of the extended coupled line and the position of the folded section determine the center frequency of the notch-band and its 3-dB bandwidth. The notch was designed to be centered at 5.5 GHz with appropriate 3-dB bandwidth to blocking interference from WLAN signals. The selectivity of the filter was enhanced by loading the U-shaped structure with a T-shaped open-circuited stub to generate two additional resonant modes in the filter's passband and two transmission zeros that were strategically located at the upper and lower cut-off frequencies of the filter. The design was fabricated and its performance verified. The proposed filter has dimensions of 9.4 × 9.9 mm2. | We prove that groups acting geometrically on delta-quasiconvex spaces contain no essential Baumslag-Solitar quotients as subgroups. This implies that they are translation discrete, meaning that the translation numbers of their nontorsion elements are bounded away from zero. | eng_Latn | 6,849 |
High-performance circular probe-fed stacked patch antenna designs are explored through the use of numerical optimization. New trends are sought to aid understanding and to suggest novel solutions. We describe the optimization technique, present a new design trend relating efficiency and bandwidth to the choice of substrate dielectric, and propose and demonstrate a novel, optimized antenna achieving 33% bandwidth whilst maintaining greater than 80% surface wave efficiency. | We investigate the parameters that control the impedance and radiation performance of proximity coupled stacked microstrip patch radiators. In particular we explore the relationship required between the dielectric layers to achieve broadband behavior and also how the dimensions of the stacked radiators and the relative location of the feed can influence the impedance response. Bandwidths in excess of 20% can be achieved with careful layer design. We also investigate the dielectric layer configurations required to achieve broadband impedance responses when higher dielectric constant feed material is used. This latter study is of particular importance when designing MMIC compatible printed antennas. | Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights. | eng_Latn | 6,850 |
Design of dual band FSS by using quadruple L-slot technique | This paper presents a new design of dual band frequency selective surface (FSS) for band pass microwave transmission application. FSS can be used on energy saving glass to improve the transmission of wireless communication signals through the glass. The microwave signal will be attenuate when propagate throughout the different structure such as building. Therefore, some of the wireless communication system cannot be used in the optimum performance. The aim of this paper is designed, simulated and analyzed the new dual band FSS structure for microwave transmission. This design is based on a quadruple L slot combined with cross slot to produce pass band at 900 MHz and 2.4 GHz. The vertical of pair inverse L slot is used as the band pass for the frequency of 2.4GHz. While, the horizontal of pair inverse L slot is used as the band pass at frequency 900MHz. This design is simulated and analyzed by using Computer Simulation Technology (CST) Microwave Studio (MWS) software. The characteristics of the transmissio... | Abstract We report ESR experiments on a LaAl 2 sample doped with 6% Gd. The experiments were performed at 1, 3, 9 and 35 GHz. We find for T ≈ T c essentially a frequency independent shift of H res , but a frequency dependence for the minimum in the linewidth. The results will be discussed in terms of static internal fields and dynamic field fluctuations. | eng_Latn | 6,851 |
Rotman lens with Ridge Gap Waveguide technology for millimeter wave applications | In this paper, a Rotman lens with Ridge Gap Waveguide technology (RGW) is proposed as an alternative for beam scanning in millimeter wave applications. To facilitate the design and measurements, a first prototype at 38 GHz will be designed and built; afterwards a final device at 60 GHz will be designed. | Kenneth J. Rosenthal, MD, explains the advantages of an add-on sulcus-based IOL for correcting refractive errors in eyes that have undergone cataract surgery with in-the-bag IOL implantation. | eng_Latn | 6,852 |
Compact Bow-Tie Quasi-Self-Complementary Antenna for UWB Applications | In this letter, a bow-tie quasi-self-complementary antenna (QSCA) for ultrawideband (UWB) applications is presented and discussed. By a coplanar waveguide (CPW)-like matching technique, the proposed antenna provides a broad VSWR <; 2:1 impedance bandwidth from 3.04 to 11.47 GHz. This feature is in favor of covering the required bandwidth from 3.1 to 10.6-GHz UWB operations. Additionally, the compact size (10 × 35 mm2) of the antenna is favorable for integration with wireless communication devices on restricted radio-frequency elements space. | In this paper, we fabricated a BT-FinFET SRAM device with the smallest cell size of 0.46 /spl mu/m/sup 2/. And a hot carrier generation mechanism in the FinFET is thoroughly evaluated by measuring the I/sub sub/ of the BT-FinFET for various Si fin widths (20/spl sim/70 nm). For the first time, we revealed the mechanism of improved hot carrier immunity of sub 50 nm fin type MOSFETs. | kor_Hang | 6,853 |
Analysis and Design of A Compact UWB Loop Antenna | An ultra wideband antenna with a rectangular loop is designed. The antenna consists of two parts of resonance radiation,a loop and slot cycle,which achieves the ultra-wideband. The high-frequency electromagnetic simulation software HFSS simulation shows that the operating frequency of the antenna is 2. 8 ~ 4. 85 GHz and the input return loss is less than- 10 d B,with a universal indicator pattern,return loss of the antenna given,which indicates that the antenna design is effective and feasible. | Alkali antimonide compounds perform well as photoemissive materials in photodetectors. A number of band-structure calculations have been reported in recent years on binary compounds; however the ternary alkali antimonides (those that involve two different alkali metal atoms) were most successfully applied. The band structure reported here explains the properties of the K2CsSb compound in ultraviolet light detectors, and discusses the properties of Cs2KSb for potential use as a detector cathode in the visible light region. | eng_Latn | 6,854 |
The effects of conductive nano fillers alignment on the dielectric properties of copolymer matrix | AbstractThis research focuses on the improvement of the dielectric and energy harvesting properties of piezoelectric P(VDF-TrFE) copolymer matrix by the alignment of conductive reduced graphene oxide nano fillers. The dispersion and the morphology of the conductive nano fillers on the co-polymer matrix were characterized by scanning electron microscopy which showed a configurational phase transition due to highly conductive nano channel formation, steric hindrance, excluded volume interaction van-der-walls forces between adjacent reduced graphene oxide sheets. Five different piezoelectric nanocomposites were prepared by varying the reduced graphene oxide contents in P(VDF-TrFE) matrix to realize its optimum concentration in the matrix. From our analysis, we observed that, an optimized morphological structure plays a vital role in the formation of polar electroactive β phase on the co-polymer matrix through the good dispersion, filler alignment and interfacial interaction of reduced graphene oxide nano fil... | In this paper, a free space power combining oscillator antenna array using a metamaterial based injection locking coupling network is described and demonstrated. The unique metamaterial series coupling network utilizes the infinite wavelength phenomenon which allows it to support an infinitely long wave at a non-zero frequency. It is demonstrated that equal phase/amplitude oscillator synchronization can be achieved without regards to the antenna element spacing in the array. A small scale prototype oscillator array is designed to have compact, non-uniform element spacing to demonstrate the concept. An EIRP of 18 dBm at 2.37 GHz is measured. | eng_Latn | 6,855 |
Slit-coupled microstrip leaky-wave antenna | The possibility that the longitudinal slit coupling structure to the parasitic strip conductor may be used in the leaky wave antenna design of a microstrip type has been tested. The radiation pattern and matching characteristics of a fabricated antenna were measured, and a comparison between the theoretical and the experimental results was given. | In this paper, we fabricated a BT-FinFET SRAM device with the smallest cell size of 0.46 /spl mu/m/sup 2/. And a hot carrier generation mechanism in the FinFET is thoroughly evaluated by measuring the I/sub sub/ of the BT-FinFET for various Si fin widths (20/spl sim/70 nm). For the first time, we revealed the mechanism of improved hot carrier immunity of sub 50 nm fin type MOSFETs. | eng_Latn | 6,856 |
Wide-band CEBG-based directive antenna | Recently, new periodic structures, cylindrical electromagnetic band gap (CEBG) structures, have been introduced and used as models to develop new directive antennas or new beam switching antennas. These structures are radially and circularly periodic, and they present pass-band and stop-band to cylindrical electromagnetic waves. In this paper, the design and experimental results for a new wide-band (78%) CEBG based-directive antenna are presented. This work was made under a project which consists on the design of an agile antenna for tactical communications in the band : 1.35 GHz - 2.7 GHz. | This paper describes how to characterize the pad structure embedding silicon devices directly in terms of scattering parameters. The new procedure accounts for distributed effects associated with the structure itself (e.g. the so-called dangling source leg effect) and other coupling effects. The proposed approach is key to extending device characterization into the mm-wave range. The procedure makes use of standard structures typically available on silicon tiles without calling for measurements of additional structures. Further, it does not rely on an equivalent circuit of the structure for its characterization. The procedure is demonstrated by measurements of structures available on the Tower-Jazz semiconductor SBC13 SiGe BiCMOS process. Results acquired over the broad range of frequencies from 2 to 50GHz will be presented and discussed. | eng_Latn | 6,857 |
Matrix-assisted laser desorption of peptides and proteins using a quadrupole ion trap mass spectrometer | The analytical capabilities of the combination of matrix-assisted laser desorption with a quadrupole ion trap utilizing ion injection are demonstrated using peptides and proteins with molecular weights up to 43 kDa. | In this paper, a free space power combining oscillator antenna array using a metamaterial based injection locking coupling network is described and demonstrated. The unique metamaterial series coupling network utilizes the infinite wavelength phenomenon which allows it to support an infinitely long wave at a non-zero frequency. It is demonstrated that equal phase/amplitude oscillator synchronization can be achieved without regards to the antenna element spacing in the array. A small scale prototype oscillator array is designed to have compact, non-uniform element spacing to demonstrate the concept. An EIRP of 18 dBm at 2.37 GHz is measured. | eng_Latn | 6,858 |
Thin film transistor and thin film transistor array panel including the same | A thin film transistor according to the present invention, the second gate electrode, a semiconductor to overlap sandwiching the first gate electrode, a first gate electrode and the interlayer insulating film overlapping across the semiconductor, the semiconductor and the gate insulating film is formed on a substrate, the substrate a source electrode and a drain electrode connected with the first gate electrode and the second gate electrode is electrically connected. | The 2015 Microwave Theory and Techniques Society (MTT-S) International Microwave Symposium in Phoenix, Arizona, played host to a total of 16 student design competitions. One of these, sponsored jointly by the MTT-12 Technical Committee on Microwave and Millimeter-Wave Packaging and Manufacturing and the MTT-8 Technical Committee on Filters and Passive Components, was based on the design of a substrate integrated waveguide (SIW) dual-band filter. | eng_Latn | 6,859 |
Microstrip patch antenna array for RFID Application | This paper presents an ‘AND gate-shaped' microstrip patch antenna array with different types of corporate feeding mechanisms. The comparative analysis of these feeding mechanisms has also been presented here. The proposed antenna is designed for 5.8 GHz operating frequency and it can be used for RFID applications. The results include parametric studies done by varying the dimensions of the substrate and also varying the length of the ground. This patch antenna offers 5.24 dB of peak gain at 5.8 GHz resonant frequency | We report on a design and simulation of silicon on insulator apodized surface diffraction grating fiber to chip coupler by ::: sub-wavelength structure which is compatible with 193 nm laser DUV lithography. The structure of designed fiber to ::: chip coupler consists of two parts: a relatively large tapered segment and a segment with the surface diffraction grating ::: having sub-wavelength structure. The first segment adjusts cross-section of silicon on insulator wire single mode ::: waveguide to standard single mode fiber diameter and the second one is designed for vertical coupling to the fiber. Four ::: types of surface diffraction grating apodization by sub-wavelength structure are designed and simulated. The simulation ::: of the fiber-to-chip coupler is performed by FDTD simulation method. The simulation results of coupling effects for ::: each apodization of surface diffraction grating are evaluated and compared with each other. | eng_Latn | 6,860 |
Next-generation satellite components using MCM technology | We have developed a miniaturized Ku-band channel amplifier and C-band low power module to provide a next-generation satellite component using Multichip Module (MCM) technology. We obtained a reduction of 70% for component's mass and 60% for component's cost by using the MCM technology. This MCM technology allows us to install many Microwave Monolithic Integrated Circuits (MMICs), Microwave Integrated Circuits (MICs), Integrated Circuits (ICs) and other devices into one package while keeping design flexibility. Also, this technology can be applied to any type of satellite components. This paper describes the MCM design philosophy, application and production, hardware results and its evaluation. | Although many patients with acute myocardial infarction can be saved by treatment of thrombolysis,percutaneous coronary intervention and conventional drugs,these approaches cannot restore the number of myocardial cells.Bone marrow mesenchymal stem cells(BM-MSCS) with their multidirectional differentiation potentials can be induced to differentiate into cardiomyocyte-like cells,improve circulation in the infarct area and prevent myocardium from remodeling.The manner,timing and clinic application of BM-MSCS transplantation for myocardial infarction are reviewed. | eng_Latn | 6,861 |
Tri-band microstrip antenna with L-shaped slots for Bluetooth/WLAN/WiMAX applications | A design rule for inset-fed rectangular microstrip patch antenna | Intermittent preventive treatment of malaria in pregnancy: a cross-sectional survey to assess uptake of the new sulfadoxine–pyrimethamine five dose policy in Ghana | eng_Latn | 6,862 |
Additive manufacturing of substrate integrated waveguide components | Textile Microwave Components in Substrate Integrated Waveguide Technology | Upper airway size is related to obesity and body fat distribution in women | eng_Latn | 6,863 |
A novel multiband Psi (Ψ) slotted fractal antenna for S-band applications | On the behavior of the Sierpinski multiband fractal antenna | Effects of Magnetic Coupling of Nonadjacent Resonators on Wireless Power Domino-Resonator Systems | eng_Latn | 6,864 |
Compact Wideband Circularly Polarized Patch Antenna for CNSS Applications | An Analytical Approach for a Novel Coupled-Line Dual-Band Wilkinson Power Divider | How Secure Are Printed Circuit Boards Against Trojan Attacks? | eng_Latn | 6,865 |
A mode-matching analysis of transverse radiating slots in an H-plane dielectric-filled rectangular waveguide | A rigorous mode-matching analysis is presented for extracting the equivalent circuit parameters of transverse slots in the broadwall of a rectangular waveguide partially filled with an H-plane slab. Both self-impedance and mutual coupling between slots can be characterized over a wide frequency range. The proposed method is numerically efficient and can take the effect of wall thickness into account, and therefore can be very useful for designing large slot arrays. | This paper presents design and characteristics of a compact, highly integrated Ka-band T/R module built by using a miniature magnetron in the transmitter chain. By implementing a solid-state modulator and microstrip design in the microwave part of the receiver, the overall size of the module has been reduced significantly. The module provides capabilities to realize Doppler date processing by using a digital coherent-on-receiver technique. | eng_Latn | 6,866 |
Characterization of a 0.13 mum CMOS Link Chip using Time Resolved Emission (TRE) | The Picosecond Imaging Circuit Analysis (PICA) technique using the Superconducting Single-Photon Detector (SSPD) allows the detailed characterization of pulse width variations along the delay chain of a high speed Self Timing Interface (STI). Pulses gradually shrink and finally disappear along the delay chain. | The development of the next-generation wireless communication systems requires broadband and multi-band devices for faster data transfers. Meanwhile, there is a trend towards the miniaturization of handheld devices. These conflicting requirements must be met using low-cost solutions, that simultaneously maintain a high efficiency. Transmission-line metamaterials (TL-MTM) provide a conceptual route for implementing small resonant antennas. Typically TL-MTM antennas suffer from narrow bandwidths. Recently, [1] addressed the bandwidth problem by proposing a two-arm TL-MTM antenna resonating at closely spaced frequencies. Furthermore, a compact tri-band monopole antenna with single-cell metamaterial loading was shown in [2] for WiFi and WiMAX applications and a dual-band metamaterial antenna was proposed in [3] for WiFi applications. | kor_Hang | 6,867 |
Attenuation in Left-handed Waveguide Structure by Equivalent Current Theory Method | In this work, the propagation and attenuation characteristics of both TE and TM waves in a waveguide structure consisting of left handed material (LHM) film by using the equivalent current theory of optical waveguide coupling method have been derived and obtained. The dispersion relations and the attenuation coefficient were numerically solved for a given set of parameters: allowed phase angles; core’s thicknesses; and propagation constants. We found that lower attenuation is realized for higher propagation constants. Moreover, attenuation coefficient has same small positive values for all thickness in phase angles range of values (00-570). Besides that, the attenuation decreases to negative values with thickness increase in phase angles range of values (570-590) which means a gain of the wave is achieved for wider buffer layer and at larger phase angles. We also found that, TE waves have lower attenuation than that of TM waves. | In this paper, a novel and simple CPW-fed planar monopole antenna is presented for UWB application. The antenna is fabricated on inexpensive FR4 substrate and fed by 50? CPW on the same layer. Measured data show that the antenna provides an impedance bandwidth of about 8GHz for the return loss less than 10dB. It is also observed that the radiation patterns are nearly omni-directional over the entire frequency range. Details of the proposed antenna are presented, and simulated results are presented and discussed. | eng_Latn | 6,868 |
Compact Rat-race Hybrid Based on Complementary Split Rings Resonators | In this work, the application of Complementary Split Rings Resonators (CSRRs) to the design of a rat-race hybrid in microstrip technology is analyzed. The use of a left-handed (LH) cell composed by a CSRR etched in the ground plane and series capacitive gap reduces the length of the required 270 - line by a factor of 5. Thanks to this length reduction, the area of the flnal prototype is 4 times smaller than the conventional distributed design. The measured results show satisfactory behavior in the frequency of interest. | We present Monte Carlo simulation results for square-well homopolymers at a series of bond lengths. Although the model contains only isotropic pairwise interactions, under appropriate conditions this system shows spontaneous chiral symmetry breaking, where the chain exists in either a left- or a right-handed helical structure. We investigate how this behavior depends upon the ratio between bond length and monomer radius. | kor_Hang | 6,869 |
Application of N,N‐bis(diphenylphosphino)aniline palladium(II) complexes as pre‐catalysts in Heck coupling reactions | Palladium(II) complexes with N,N-bis(diphenylphosphino)aniline ligands catalyze the Heck reaction between styrene and aryl bromides, affording stilbenes in good yield. The structures of two of the complexes used as pre-catalysts have been detd. by single-crystal X-ray diffraction. | A new method of designing a dual-band balun bandpass filter (BPF) with high selectivity is proposed and implemented by taking advantage of the existence of multiple substrate integrated waveguide (SIW) cavity modes. The major design concept applied in this letter is based on two mechanisms: one is by properly placing the output ports to achieve the balanced output for both passbands, and the other is by taking cross coupling of higher/lower order modes to achieve transmission zeros (TZs) at each side of the passband. Two internal coupling slots are involved to separately control the coupling level between cascaded cavities for each passband. A prototype operating at $9.0~{\rm GHz}$ and $9.8~{\rm GHz}$ has been realized and shows the desired filtering performance. The differences between the two outputs are within $180^{\circ}\pm 2^{\circ}$ in phase and $0.6~{\rm dB}$ in magnitude across the two passbands. Measured frequency responses agree well with the simulated ones in this work. | eng_Latn | 6,870 |
A Digitally Tuned lal GHz Subharmonic 1njectio;n-Locked VCO in 0.18pm CMOS | In this paper, a second-order digitally controlled oscillator, based on subharmoninc injection locking, is presented. The prototype design is implemented in a 0.18pm standard CMOS process. The implemented injection-locked oscillator, with a resonant frequency of 1.1 GHz, provides a low phase noise of -99.7 dBc/Hz at a 50 KHz offset. The oscillator is injection-locked with the eleventh harmonic of a low frequency 100 MHz PLL Using switched-capacitor hank, the oscillator can be digitally tuned to within 300 KHz of the injection locking frequency which allows it to': be locked with an input signal as low as -53 dBy#Th2 oscillator has an overall tuning range of 20% and td@ther with an input amplijier consumes only 688 ,LAW when > powered by a single 1.6V supply voltage. or | A numerical moment-method for treating the dipole-FSS loaded hard rectangular waveguide has been presented. The results obtained from it agree with CST simulations. An unusual upper modal cutoff-frequency, not present in the conventional bare-slab loaded waveguide, was found in the dipole-loaded one. Modes of such waveguides thus possess band-pass properties. If appropriately designed, a stopband is possible. This suggests that when these waveguides are used as the lower frequency elements of a multi-band interlaced array, the operation of the higher frequency elements within the stopband allows the two functions to be performed simultaneously without interference. Measurements on a manufactured dipole-loaded waveguide were also made. The experimentally-obtained dispersion diagrams concur well with CST simulations and with a third independent approach based on network theory (Maci, S. et al., IEEE Trans. Antennas Propag., vol.53, no.1, 2005). | eng_Latn | 6,871 |
Flip-Chip Mounted GaAs Power Fet with Improved Performance in X to Ku Band | A GaAs power m.e.s.f.e.t. with a new structure has been developed, which allows extremely reduced source inductances and minimised thermal resistance. In the structure, the chip, with metal posts plated on the source, drain and gate pads, is connected directly to the package with no wire. The best results obtained were 2.5 W at 15 GHz and 4.1 W at 12 GHz. | This paper presents an ‘AND gate-shaped' microstrip patch antenna array with different types of corporate feeding mechanisms. The comparative analysis of these feeding mechanisms has also been presented here. The proposed antenna is designed for 5.8 GHz operating frequency and it can be used for RFID applications. The results include parametric studies done by varying the dimensions of the substrate and also varying the length of the ground. This patch antenna offers 5.24 dB of peak gain at 5.8 GHz resonant frequency | eng_Latn | 6,872 |
The Simulation Design and Error Analysis of Millimeter Wave Fuze Antenna | After introducing the design of millimeter wave waveguide slot array antenna for fuze equipment,the design parameters are simulated model building.Consideres the manufacturing error of antenna structure to antenna electric property.Gains the manufacturing tolerance range to ensure the millimeter wave antenna performance permission by simulation. | In this paper, we fabricated a BT-FinFET SRAM device with the smallest cell size of 0.46 /spl mu/m/sup 2/. And a hot carrier generation mechanism in the FinFET is thoroughly evaluated by measuring the I/sub sub/ of the BT-FinFET for various Si fin widths (20/spl sim/70 nm). For the first time, we revealed the mechanism of improved hot carrier immunity of sub 50 nm fin type MOSFETs. | eng_Latn | 6,873 |
Assessment of graphene nanomesh and nanoroad transistors by chemical modification | Chemical modification of graphene plays an important role on opening a bandgap for potential digital electronic device applications. We propose and examine the performance limits of graphene nanoroad and graphene nanomesh transistors created by selective hydrogenation and fluorination of graphene. First principle ab intio simulations with a ballistic transistor model are applied to model two-dimensional transistor channels made of hydrogenated or fluorinated graphene nanoroads and nanomeshes. It is shown that array of graphene nanoroads defined by hydrogenation or fluorination of atomically narrow dimmer lines in a 2D graphene are most ideal for transistor channel material in terms of delivering a large on-current, which significantly outperforms Si MOSFETs. In addition, comparable performance to silicon can be achieved by careful designed graphene nanomesh through patterned hydrogenation or fluorination. Fluorination is shown to be energetically more preferred and easier to achieve than hydrogenation. | In this paper, a broad bandwidth, high gain rectangular patch antenna using planar-patterned metamaterial concept and its power reception performance are discussed. Top patch consists of separated micro triangular periodic gaps while the ground plane is etched with crossed strip-line gaps. The patterned metal patch and ground plane form a coupled capacitive-inductive circuit of negative index metamaterial. In addition, experimental and theoretical power reception performance of the metamaterial antenna for different selected intervals are compared by using Software Defined Radio. | eng_Latn | 6,874 |
Spectral Transmission Line Analysis of a Composite Right/Left-Handed Uniaxially Anisotropic Meta-substrate | The TM spectral transmission line model of a grounded meta-substrate with uniaxially anisotropic properties, corresponding to a composite right/left-handed sub-wavelength mushroom-type structure, is computed. The dispersion relation is found by the transverse resonance technique. It is analyzed and compared with the particular case of an isotropic grounded slab. The study is limited to the left-handed region of the metasubstrate, which corresponds to the frequency band where the permittivity and permeability are negative and most dispersive. The work considers only TM modes, for which the effects of dispersion and anisotropy are most significant. The leaky-modes in the anisotropic left-handed meta-substrate are shown to exhibit a leakage factor which may be conveniently designed to very low values for super highly directive leaky-wave antennas. | Analytical procedure, utilizing matrix algebra, is developed for determining longitudinal stresses, transverse moments, and vertical deflections in folded plate structures; sequence of matrix operations can be readily programmed for digital computer having available matrix subroutines; sequence programmed for IBM 704 digital computer is described. | eng_Latn | 6,875 |
Broadband Microstrip Patch Antenna Using a Superstrate Layer | A 2×4 broadband microstrip rectangular patch antenna array with the superstrate layer is analyzed and designed in this paper, based on the single broadband microstrip patch antenna, as well as the reasonable impedance match network. The simulation result, compared with a 2×8 microstrip antenna array with superstrate layer in different impedance match network, showed that the superstrate layer could notablely improve the bandwidth of the microstrip antenna array with reasonable impedance match network design. | Structural studies using transmission electron microscopy have been made on 1-eV band-gap materials, lattice-matched to GaAs and Ge substrates, grown by metal-organic vapor-phase epitaxy for use in multijunction, high-efficiency solar cells. | eng_Latn | 6,876 |
Identification of potential diagnostic markers in bronchial fluid of patients with non small cell lung cancer (NSCLC) | e22216 Background: Early diagnosis in lung cancer could improve its treatment and, subsequently, its prognosis and survival. New proteomic techniques can identify potential diagnostic and prognosti... | ABSTRACTThis paper presents a simplified composite right/left-handed trans-mission-line (SCRLH-TL) unit-cell, which is primarily consisted of a rectangular ring with two grounded vias. Superposing this unit-cell onto a high–low–high step-impedance resonator (SIR) leads to a novel SCRLH-TL multiple-mode resonator (SCRLH-TL MMR). By combining the SCRLH-TL MMR with a cross-shaped defected ground structure (DGS) and using a broadside coupling approach with two lumped capacitors, a highly compact and ultra-wideband bandpass filter was carefully designed and fully investigated. The filter was fabricated by using a conventional PCB process with the substrate of FR4. The measured 3-dB passband ranges from 2.55 through 11.75 GHz with the fractional bandwidth (FBW) of about 129%. The filter exhibits a high selectivity with steep skirt property, and has a wide upper stopband. Its total dimension, including the rectangular substrate with feed lines, occupies only 13.5 mm × 6.0 mm, which is found with the smallest siz... | eng_Latn | 6,877 |
Electrically small antenna tuning techniques | Cognitive Radio systems require antennas and microwave components to be actively tuned for different parts of the frequency spectrum. In this paper results of a study of three antenna tuning techniques are presented here. The first tunable antenna is a liquid crystal (LC) tuned microstrip patch antenna operating in the 2 GHz range. The simulated tuning range is 8% while the measurements showed a range of 3.8%. Losses in the LC material at these frequencies give rise to antenna efficiencies ranging from 25% to around 7% when the LC is in the unbiased state. The second antenna is a reconfigurable PIFA which is able to cover 7 frequency bands by controlling the combination of 4 MEMS switches mounted on the radiator. The third antenna is a dual-port antenna which is comprised of two capacitive-fed plates sharing one lower-band patch, operating for 5 mobile phone bands. | Structural studies using transmission electron microscopy have been made on 1-eV band-gap materials, lattice-matched to GaAs and Ge substrates, grown by metal-organic vapor-phase epitaxy for use in multijunction, high-efficiency solar cells. | eng_Latn | 6,878 |
Circularly polarized square slot antenna for navigation system | This letter presents a circularly polarized square slot antenna used for navigation system. A tuning stub protruded into the slot from the narrowed stripe at the end of the signal strip of the CPW is used to obtain good impedance matching. A measurement showed that the bandwidth below -10dB of the antenna varied from 1.15GHz to 1.71GHz, and the Axial Ratio below 3dB is from 1.14 GHz to 1.75GHz. The radiation pattern is bi-directional. | The invention relates to a support body for the deposition of polycrystalline silicon, metal or a semiconductor, comprising two thin rods, which are connected at their one ends to a horizontal bridge and are connected at their other ends in each case with an electrode to the to provide carrier body with power, characterized in that a distance between the bridge ends is greater by 2-20% than a distance of the electrode-side ends, so that the thin rods are mechanically clamped. | eng_Latn | 6,879 |
A Monopolar Patch Antenna With Very Wide | A monopolar patch antenna that utilizes a band- width broadening technique is investigated experimentally and numerically. The proposed antenna consists of a monopole that is formed by connecting four trapezoidal plates orthogonally. A circular patch, which is shorted to the circular ground plane by four shorting wires, is placed at the top of the monopole. The antenna possesses 10-and 14-dB return loss bandwidths of 138% and 107.2% respectively, which is about 49 times that of the corresponding monopolar wire-patch antenna. Also, it provides monopole-like radiation patterns over such wide oper- ating bandwidth. As the proposed antenna can achieve such wide impedance bandwidth with relatively low profile, it is very suitable for multi-band mobile communication systems. Index Terms—Monopolar patch antenna. | In recent years a trend has evolved from unidirectional to multidirectional locking plates. Different technical solutions have been developed and the quality of the angle stability of all methods has been described as sufficient. Published trials describing the necessary shearing forces are rarely published. We report two cases with loss of reduction after the use of a variable angle locking implant used in distal radius fractures. | eng_Latn | 6,880 |
Wideband Circularly Polarized Microstrip Antenna with Enhanced Beamwidth | Circularly polarized microstrip antennas have inherent narrow axial ratio bandwidth and beamwidth is close to 90°. The axial ratio (AR) bandwidth can be increased by using a U-slot. In this paper, a U-slot loaded microstrip patch antenna is mounted on a conical ground to increase the AR beamwidth. This results in simultaneous increase in both the AR bandwidth and the AR beamwidth which as per the author's knowledge is rare to achieve. The AR bandwidth obtained is 2.18% and the AR beamwidth is around 140°. The half power beamwidth (HPBW) is also around 130°. | Many conventional methods to detect propagation losses in optical waveguides, such as Cut-Back Method and Prism-Sliding Method, are either destructive or inconvenient. Here we demonstrated a new method -- CCD camera photographing method. A CCD camera was used to take digital photographs of the light streak in the waveguides and the scattered-light intensity distribution is recorded. After fitting the intensity distribution into an exponential attenuate curve, the propagation loss finally can be calculated from the attenuation coefficient of the curve. Compared with other detecting methods, it is more convenient and accurate. In our experiment, samples of polymer waveguides with propagation losses less than 0.5 dB/cm were fabricated. | eng_Latn | 6,881 |
Cavity Resonators Do the Trick: A Packaged Substrate Integrated Waveguide, Dual-Band Filter | The 2015 Microwave Theory and Techniques Society (MTT-S) International Microwave Symposium in Phoenix, Arizona, played host to a total of 16 student design competitions. One of these, sponsored jointly by the MTT-12 Technical Committee on Microwave and Millimeter-Wave Packaging and Manufacturing and the MTT-8 Technical Committee on Filters and Passive Components, was based on the design of a substrate integrated waveguide (SIW) dual-band filter. | A 2×4 broadband microstrip rectangular patch antenna array with the superstrate layer is analyzed and designed in this paper, based on the single broadband microstrip patch antenna, as well as the reasonable impedance match network. The simulation result, compared with a 2×8 microstrip antenna array with superstrate layer in different impedance match network, showed that the superstrate layer could notablely improve the bandwidth of the microstrip antenna array with reasonable impedance match network design. | eng_Latn | 6,882 |
Key Mount Technology of Microwave Module | The key multi-assembly processes of microwave module mount technology are discussed, which include large area grounding interconnection technology, chip bonding technology, interconnection of wire bonding technology and sealing technology. Some usual methods of each process are introduced separately, especially their elements as well as advantages and disadvantages, moreover, probe into their factors affecting on quality and optimization methods. | Note: Univ wisconsin madison,dept phys,stoughton,wi 53589. montana state univ,dept phys,bozeman,mt 59717. Kelly, mk, univ wisconsin madison,ctr synchrotron radiat,stoughton,wi 53589.ISI Document Delivery No.: J2593Part 2 Reference LSE-ARTICLE-1987-009 Record created on 2006-10-03, modified on 2017-05-12 | eng_Latn | 6,883 |
High gain circularly polarized resonance cavity antenna at X-band | In this paper, a high gain and circularly polarized (CP) resonance cavity antenna (RCA) is proposed at X-band. An aperture coupled microstrip antenna (ACMA) is used as the basic antenna and a frequency selective surface, consisting of an array of circular patches is used as superstrate. The proposed RCA provides a gain enhancement upto 12 dB compared to the microstip patch at 8.2 GHz. A detailed design of the RCA is explained in this paper. Final gain of the antenna is 20.5 dBic, and axial ratio band width (AR < 3dB) of 200 MHz. This high gain CP antenna can be used for payload data transmission system of remote sensing satellites at X-band. | Here we present the dependences of the phase and attenuation constants of silicon carbide (SiC) cylindrical rod waveguide upon frequency at di erent temperatures, i.e. T = 1800 ◦C and T = 1900 ◦C when the rod radius is relatively large. We have also calculated the electric and magnetic eld distributions at di erent frequencies in order to explain the anomalous attenuation. The SiC rod waveguide was investigated by the partial area method. The complex roots have been found by the Muller method. Computer codes for calculations were written in MATLAB language. | eng_Latn | 6,884 |
Development of Fixed Frequency Beam Steering Wide Band Leaky Wave Cavity Antenna | A complete design of substrate integrated leaky wave cavity antenna for fixed frequency beam steering is presented. The antenna consists of a small rectangular metallic tapered cavity fed by hook-shaped element and covered by the substrate. The steering of the beam in the desired direction is achieved by controlling the taper of the cavity. The beam is scanned at fixed frequency by changing position of the microstrip lines on the substrate. The substrate placed on the cavity resolves the problem of input impedance mismatch. The pertinent features of the antenna are compactness, broadband, and fixed-frequency beam steering capability. | In this paper, we fabricated a BT-FinFET SRAM device with the smallest cell size of 0.46 /spl mu/m/sup 2/. And a hot carrier generation mechanism in the FinFET is thoroughly evaluated by measuring the I/sub sub/ of the BT-FinFET for various Si fin widths (20/spl sim/70 nm). For the first time, we revealed the mechanism of improved hot carrier immunity of sub 50 nm fin type MOSFETs. | eng_Latn | 6,885 |
A Dual-Polarization Slot Antenna Using a Compact CPW Feeding Structure | A dual-polarization coplanar waveguide (CPW)-fed slot antenna is proposed in this letter. By exploiting the even and odd modes of a CPW structure, two orthogonal polarizations can be excited in a slot aperture by the same feeding CPW, which results in a compact dual-polarization antenna design with very good isolation between the ports. The -10-dB reflection coefficient bandwidths of two polarizations are 670 MHz (27.9%) for one polarization and 850 MHz (35.4%) for the other, and the isolation between the two ports in the WLAN band is better than -32.6 dB. The radiation pattern and efficiency of the proposed antenna are also measured, and radiation pattern data are compared with simulation results. | This paper represents a channel length ratio optimization at a different high logic level voltage for 6-Silicon Nanowire Transistors (SiNWT) SRAM cell. This study is the first to demonstrate an optimized length ratio of nanowires with different Vdd of nano-scale SiNWT based SRAM cell. Noise margins (NM) and inflection voltage (Vinf) of transfer characteristics are used as limiting factors in this optimization. Results indicate that optimization depends on both length ratios of nanowires and logic voltage level (Vdd), and increasing of high logic voltage level of the SiNWT based SRAM cell tends to decrease in the optimized nanowires length ratio with decreasing in current and power. | kor_Hang | 6,886 |
A Novel Approach for Modelling Oscillator Circuit with Antennas | This paper presents an approach to unify oscillator circuit and antenna for future mm wave systems. Here, the passive circuitry present on both sides of transistor in an oscillator circuit are replaced by antennas. The prototype consists of two antennas arranged in a linear array with transistor placed in the spacing between them. General modelling procedure is reported followed by proof of concept demonstration at frequency of 5 GHz. Frequency tuning up to 70 MHz is also achieved around 5 GHz from measurements and maximum radiation is observed at beam steered angle of −20° with respect to broadside, from simulation. Transmission line model of the same is developed to reduce the time for initial analysis and optimization, and presented here | The paper is concemed with the design of robust guaranteed cost controller with H, - y disturbance attenuation performance for linear systems with norm bounded parameter uncertainties and disturbances. | eng_Latn | 6,887 |
Compact microstrip diplexers based on a dual-passband filter | Novel microstrip diplexer structures composed of a dual-passband filter together with two matching circuits are proposed. By using only a single dual-passband filter, the proposed diplexer may be made compact when compared with the conventional diplexer configuration which has two single- passband filters. In this study, the dual-passband filter is realized using the parallel-coupled microstrip structures, and the matching circuits are developed based on the stepped- impedance transmission-line sections along with suitable open stubs. By suitably incorporating the open stubs into the matching circuits, a 3 rd-order Chebyshev microstrip diplexer with dual center frequencies at 2.36 GHz and 5.17 GHz and an acceptable isolation is implemented. | Abstract A new formulation for the C 0 quadrilateral and Serendipity plate elements is presented. It is an extension of the mode-decomposition approach that has been successfully applied in evaluating the C 0 triangular linear plate element. In contrast to the triangular element, the concept of an equivalent discrete Kirchhoff configuration is utilized. The elements are applied to several examples and the performance of these elements is shown to be quite good. | eng_Latn | 6,888 |
A Metal-to-Dielectric Waveguide Transition with Application to Millimeter-Wave Integrated Circuits | In this paper we describe the development of an efficient, low-loss transition from a conventional metal waveguide to a planar dielectric guide of rectangular cross section. Such a transition finds important application in millimeter-wave integrated circuits. We show that for a given length of the flared horn used for launching energy into the dielectric waveguide, the insertion loss of the transition can be reduced to a very low figure by choosing the flare angle of the horn appropriately. | Multilevel Conversion systems have certain advantages that can be applied in renewable energy systems. To verify that advantages we are developing a re-configurable 1 kW prototype. Among the experiments that we have considered, a sliding mode control law can force this converter to behave like an AC Current Source. We model our converter like a set of Tibuck converters operating sequentially. Some experimental results are given. | yue_Hant | 6,889 |
Subcellular localization of serotonin-immunoreactivity in the pedal ganglion of Mytilus galloprovincialis (Mollusca, Bivalvia). | Serotonin has been localized in neurons of the pedal ganglion of Mytilus galloprovincialis by means of colloidal gold immunostaining. Ultrastructural quantitative analysis shows that gold particles are concentrated over perikarya and fibers containing a unique vesicle population. The vesicles are round or elliptical with a diameter ranging from 100 to 180 nm and have a dense core with areas of minor density. Their intense labelling suggests that they are the main cellular compartment where serotonin is stored. | ABSTRACTThis paper presents a simplified composite right/left-handed trans-mission-line (SCRLH-TL) unit-cell, which is primarily consisted of a rectangular ring with two grounded vias. Superposing this unit-cell onto a high–low–high step-impedance resonator (SIR) leads to a novel SCRLH-TL multiple-mode resonator (SCRLH-TL MMR). By combining the SCRLH-TL MMR with a cross-shaped defected ground structure (DGS) and using a broadside coupling approach with two lumped capacitors, a highly compact and ultra-wideband bandpass filter was carefully designed and fully investigated. The filter was fabricated by using a conventional PCB process with the substrate of FR4. The measured 3-dB passband ranges from 2.55 through 11.75 GHz with the fractional bandwidth (FBW) of about 129%. The filter exhibits a high selectivity with steep skirt property, and has a wide upper stopband. Its total dimension, including the rectangular substrate with feed lines, occupies only 13.5 mm × 6.0 mm, which is found with the smallest siz... | eng_Latn | 6,890 |
Communication apparatus and communication method capable of wired and wireless communication | The present invention provides a communication device capable of communication and wired and wireless communication methods. In a parameter setting method, when the wireless communication device and a different device having a wired connection, such a wired connection using the wireless setting acquired value. If the wireless communication device without a wired connection to different devices, short range wireless communication using the wireless setting values acquired from different devices. Upon acquiring wireless setting value, the notification to the user according to the acquisition method. | Fabrication of slow-wave circuits for TWTs is challenging at frequencies in the upper millimeter-wave range, due to size and geometry limitations of available methods. We describe fabrication techniques being developed for mmW circuits based on microfabrication and additive manufacturing. We present progress on W-band serpentine waveguide circuits fabricated by UV-LIGA, 3D printing, and CNC machining. | eng_Latn | 6,891 |
Dual polarized wide-band stacked microstrip antenna with aperture coupling for SAR applications | The design and experimental results of a C-band dual polarized aperture-coupled stacked patch microstrip antenna are presented. The antenna is capable of operating over a bandwidth of 26% with improved front-to-back ratio. The patches are excited through crossed slots. The feed lines are separated by a thin substrate to enhance the port decoupling. The measured impedance and the radiation pattern of the antenna at C-band are presented. | This work describes a simple yet fast fabrication method to prototype silicon-on-insulator nanowires (SOINW) by using FIB milling and sacrificial oxidation on SOI substrate. Al-gated silicon wires with 8nm diameter and 50-200nm length are successfully demonstrated. The Si-wires are heavily implanted with phosphorus in between two oxidation steps, resulting in a film structure in which the hopping conduction mode occurs in the electron accumulation regime. Conduction oscillations are observed in 8nm diameter Si-wires at room temperature, in contrast with large geometry samples where no oscillations are visible even at low temperature and where the conduction appears as being temperature activated. | eng_Latn | 6,892 |
Metamaterial inspired planar broadband antenna | An electrically small metamaterial-inspired antenna is presented and discussed. The antenna requires a small foot print of λ/5 × λ/10 where λ is the wavelength corresponding to the resonant frequency, when printed on a substrate of dielectric constant 4.4 and thickness 1.6mm. The antenna offers a 2:1 VSWR from 750MHz-1.4GHz which covers CDMA, GSM and ISM bands. A top loaded monopole with a meandered element ground plane constitutes the antenna structure. | We present the design for the chalcogenide nanofiber coated with a thin finite tellurite cladding. The effects of the thickness of the tellurite coating on the dispersion and the nonlinearity of the nanofiber are studied. | eng_Latn | 6,893 |
Compact Ultra-Wideband Antenna with Dual Band-Notched Characteristic | A compact ultra-wide band printed monopole antenna with dual band-notched characteristic is proposed. By using only one H-shaped slot etched on the radiation patch, two notched band, 3.3–3.6 GHz for WiMAX and 5.15–5.825 GHz for WLAN, are achieved. Moreover, the size adjustment of the key structure aiming at the band notched characteristic is discussed. The proposed antenna yields an impedance bandwidth of 3.1–10.6 GHz with VSWR < 2, except the notched bands. The antenna is successfully simulated and measured, showing dual band rejected characteristic can be obtained by using the only one H-shaped slot. | We discuss a role of the double helicity-flip amplitudes and derive new unitary bounds for these amplitudes in elastic $pp$-scattering at small values of $t$. We show that the usual assumption on the smallness of such amplidudes can be justified only in the shrinking with energy region of small $t$ values. | eng_Latn | 6,894 |
Dispersion characteristics of multilayer coplanar waveguide using Single Layer Reduction (SLR) technique | In this paper the Single Layer Reduction (SLR) technique is presented to compute dispersion characteristics of multilayer coplanar waveguide (CPW) with finite conductor thickness. The effective relative permittivity for the multilayer structure is derived from conformal mapping. Then SLR technique is used to convert multilayer CPW structure to an equivalent single layer structure. The dispersion characteristic of equivalent CPW structure is calculated from the closed form expressions. | Unibond SOI wafers, made by the Smart Cut process, were significantly distorted during processing with an established bulk silicon wafer CMOS process. The cause of distortion upon examination of routine photolithography overlay error measurement data was attributed to the use of a RTA process which was not optimized for these SOI wafers. An examination of the residual overlay errors after correction for wafer distortion indicated that the asymmetry of the pattern on the wafer prior to RTA processing may contribute to or promote these distortions in conjunction with an unoptimized RTA process. | eng_Latn | 6,895 |
ALK FISH positivity and crizotinib efficacy in patients (pts) with non-small cell lung cancer (NSCLC). | 9062Background: Crizotinib trials provide a large dataset to evaluate the distribution of % ALK+ cells by FISH in ALK+ NSCLC and the association between degree of ALK positivity and clinical outcom... | ABSTRACTThis paper presents a simplified composite right/left-handed trans-mission-line (SCRLH-TL) unit-cell, which is primarily consisted of a rectangular ring with two grounded vias. Superposing this unit-cell onto a high–low–high step-impedance resonator (SIR) leads to a novel SCRLH-TL multiple-mode resonator (SCRLH-TL MMR). By combining the SCRLH-TL MMR with a cross-shaped defected ground structure (DGS) and using a broadside coupling approach with two lumped capacitors, a highly compact and ultra-wideband bandpass filter was carefully designed and fully investigated. The filter was fabricated by using a conventional PCB process with the substrate of FR4. The measured 3-dB passband ranges from 2.55 through 11.75 GHz with the fractional bandwidth (FBW) of about 129%. The filter exhibits a high selectivity with steep skirt property, and has a wide upper stopband. Its total dimension, including the rectangular substrate with feed lines, occupies only 13.5 mm × 6.0 mm, which is found with the smallest siz... | eng_Latn | 6,896 |
A Miniaturized Polarization Insensitive Frequency Selective Surface at Ka-band | A wideband miniaturized frequency selective surface (FSS) is proposed at Ka-band. Passband FSSs have largely been studied in recent years however, still higher periodicity, high profile (due to the thicker substrate) and less bandwidth are the most common issues. In this paper, we investigate a novel miniaturized FSS consisting of two metallic layers, separated by a thin dielectric substrate that works as a spatial version of a single passband microwave filter. Patch layer is slotted to increase the capacitance whereas the ground layer has a cross loop aperture for better coupling. Numerical simulations demonstrate that proposed design exhibits a passband resonating at 28.7 GHz with 3dB bandwidth of 8.19GHz from 26.11 to 34.3GHz at normal incidence angle. Since the geometry is symmetric with minuscule array size, proposed FSS structure shows stability for both polarizations and with higher incidence angles (up to 30°). | This paper presents the spectral dependences of the phase shift and the position of ::: the optic axis for three-, five-, and seven-component zero-order wave plates ::: fabricated from polymethyl methacrylate, which possesses artificially produced ::: anisotropy. Besides this, the dependences of the phase shift of the wave plates on ::: the angle of incidence of the rays and the temperature are presented, along with the ::: spectral dependence of the transmittance of the plates. | eng_Latn | 6,897 |
Relationships between Bridge Foil Parameters and Input Pulse Current | Abstract The electrical exploding of a bridge foil consists of four stages: solid, liquid, gas and plasma. Most of the energy absorbed by the bridge foil comes from joule heating; therefore, it is great important to study the influence of the parameters of the bridge foil on its electrical exploding process. In order to improve the energy efficiency of the exploding foil initiation system (EFIs) and obtain the relation between the bridge foil parameters and input pulse current, the deposited energy and the peak power in the process of electrical explosion of square waveform bridge foil was investigated. The result of this study could provide guidance for the optimization design of exploding foil initiation system. | Today, SiGe HBT cut-off frequencies are higher than 230 GHz (Chevalier et al., 2004) and this increase allows new millimeter wave (MMW) applications on silicon such as 60 GHz WLAN and 77 GHz automotive radar. One of the success keys is then the passive integration. This study focuses on a 52 GHz silicon integrated antenna and related feeding transmission line (TL) topics. Double slot antenna integrated in a standard BiCMOS process and 40 GHz coplanar patch antenna (2.3dB gain @ 40 GHz) with a coplanar waveguide (CPW) feed line are depicted and characterized. Integrated TL achieved on standard STMicroelectronics (ST) BiCMOS, CMOS and silicon on insulator (SOI) technologies are described, performances are given (<0.7 dB/mm losses @ 80 GHz for SOI CPW). A full modeling has been developed up to 80 GHz with new approach for CPW on silicon technology due to passivation layer. | eng_Latn | 6,898 |
Photonic spectra of a Bragg microresonator with a ferroelectric resonator layer | Abstract Transmission spectra of a photonic crystal resonator structure have been obtained where the Bragg dielectric mirrors contain a finite number of periods with an inverted order of layers and the resonator layer is made of a ferroelectric with a permittivity many times exceeding the permittivity of the layers in Bragg mirrors. Almost a complete transmission suppression was detected not only in the photonic band gap (except for a narrow region of the defect mode), but also outside the forbidden band. | In this paper, we show a wideband transmission line (TL) model for a Fabry-Perot cavity (FPC) antenna which is designed at a center frequency of 63 GHz using a thick and slotted metallic partially reflective surface. Then, by using the proposed wideband circuit model, we predict the gain and 3dB gain bandwidth of the antenna, assumed as infinitely large in the transverse domain (for the modeling purposes). Finally we compared the circuit model results to the full-wave ones for a FPC antenna of finite extent. | eng_Latn | 6,899 |
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