bluuebunny/crossref_metadata_2025_split huggingface dataset:
Characterization of the electrical performance of different signal via geometries
Authors: Agili Sedig S. , Smith Stephen B. , Balasubramanian Vittal 
Published: December 2005

AbstractSeveral signal via geometries are analyzed for across and through transmission by varying the drill‐hole diameter, ratio of the pad and antipad diameters to drill‐hole diameter, and number of ground planes. Time‐ and frequency‐domain results showing impedance‐, insertion‐, and return‐loss trends, which are useful for designing via geometries for high‐speed transmission, are obtained. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 315–320, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21336
Direct optical‐to‐microwave domain conversion
Authors: Haridim M. , Hachamo Y. Z. , Lembrikov B. I. , Mechani O. , Ben‐Ezra Y. , Podevin F. 
Published: December 2005

AbstractA novel method for direct conversion of optical signals into microwave signals is proposed. This method is based on the optical controlling of microwave devices. The feasibility of the proposed method is experimentally proved for a microstrip line implemented on Si substrate. We present experimental results for conversion of on‐off keying (OOK) optical signals to binary amplitude‐shift keying (ASK) microwave signals. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 320–322, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21337
Multiscaling reconstruction of metallic targets from TE and TM experimental data
Authors: Azaro R. , Donelli M. , Franceschini D. , Massa A. 
Published: December 2005

AbstractThe noninvasive imaging of unknown objects is of particular interest in several industrial applications. In this paper an iterative multiresolution strategy (IMRS) is applied to the reconstruction of metallic targets from experimental measurements. A representative test case is presented for evaluating the effectiveness of the IMRS for dealing with real data collected in a controlled environment in both TE and TM illuminations. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 322–324, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21338
A compact printed hook‐shaped monopole antenna for 2.4/5‐GHz wlan applications
Authors: Lee Chi‐Hun , Park Seong‐Ook 
Published: December 2005

AbstractThis paper proposes a compact printed hook‐shaped monopole antenna for 2.4/5‐GHz WLAN applications. The designed antenna has a compact size with dimensions 26 × 10 × 1 mm3. The impedance bandwidth (VSWR < 2) of the proposed antenna is about 170 MHz (2.32–2.49 GHz) for 2.4‐GHz (Bluetooth) bands and 4500 MHz (4.4–8.9 GHz) for the 5‐GHz (WLAN) bands. The radiation patterns are nearly omnidirectional, which is similar to typical those of monopole antenna. The maximum measured radiation gains are 1.45 dBi at 2.43 GHz and 3.37 dBi at 5.8 GHz, respectively. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 327–329, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21340
Artificial magnetic conductor using split ring resonators and its applications to antennas
Authors: Oh Soon‐Soo , Shafai Lotfollah 
Published: December 2005

AbstractAn artificial magnetic conductor using the split‐ring resonators (SRRs) printed on conductor‐backed dielectric substrate is presented. The simulation and measurement verify that the magnetic conductor is successfully accomplished around the resonant frequency. As an antenna application, the characteristics of a horizontal wire antenna placed above the SRR array, as well as a conducting ground plane and a grounded dielectric slab, are investigated and compared. A maximum gain of 4.34 dBi is obtained for the wire antenna above the SRR array. The results confirm that the split resonators can successfully be used to replace the antenna ground plane in order to improve their performance. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 329–334, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21341
Polarization‐insensitive polymer waveguide Bragg gratings
Authors: Cheng S. Y. , Chiang K. S. , Chan H. P. 
Published: December 2005

AbstractWe report the design and fabrication of Bragg gratings in benzocyclobutene (BCB) channel waveguides with emphasis on the demonstration of their polarization dependence. The effects of the stress‐induced birefringence in the waveguide on the polarization dependence of the Bragg gratings are characterized and discussed. Our results show the possibility of realizing tunable polarization‐insensitive Bragg‐grating filters with simple polymer waveguide structures. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 334–338, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21342
A 176‐190 GHz transmitter module using indium phosphide and gallium arsenide MMICs
Authors: Archer John W. , Shen Mei Gan 
Published: December 2005

AbstractThis paper describes a double‐sideband, upconverting transmitter module with a potential application to future‐generation point‐to‐point telecommunications in the 176–190‐GHz band. The multichip module incorporates indium phosphide (InP) and gallium arsenide (GaAs) monolithic microwave integrated circuits (MMICs). It is believed that this is the first time an all‐MMIC transmitter module has been reported in this frequency band. The small‐signal up‐conversion gain falls approximately monotonically from 0 dB for output at 176 GHz, to −15 dB for output at 190 GHz. The input frequency range covers 0.5 to 9 GHz and the local oscillator can be tuned from 45 to 47 GHz. Gain compression of 1‐dB occurs at an output power of −12 dBm at 176 GHz, decreasing to −20 dBm at 190 GHz. Output 3rd‐order intercept point is +1 dBm at 176 GHz, decreasing to −12 dBm at 190 GHz. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 338–341, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21343
X‐band microstrip Yagi array with dual‐offset aperture‐coupled feed
Authors: Venkatesan Jaikrishna 
Published: December 2005

AbstractIn this paper, a three‐element microstrip Yagi array is designed for operation at the X‐band. The driven patch of each microstrip Yagi element is fed using a dual‐offset aperture‐coupled feed to obtain circular polarization. Performance of the array when scanned electronically is investigated experimentally via measured field patterns. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 341–344, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21344
Advanced modulation formats for long‐haul optical‐transmission systems with dispersion compensation by chirped FBG
Authors: Yong Chen , Jihong Cao , Ting Chen , Shuisheng Jian 
Published: December 2005

AbstractNonreturn‐to‐zero (NRZ) and carrier‐suppressed return‐to‐zero (CSRZ) modulation formats transmitted in long‐haul optical‐transmission systems with different dispersion‐compensation methods are numerical evaluated. We also carry out an 8 × 10 Gb/s CSRZ‐based transmission experiment over 2560‐km standard‐fiber straight lines with dispersion compensation by chirped fiber Bragg grating (CFBG) successfully. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 344–347, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21345
Ultra‐wideband cylindrical antenna design using the Green's function method (GFM) as an absorbing boundary condition (ABC) and the radiated field propagator in a genetic optimization
Authors: Holtzman R. , Kastner R. , Heyman E. , Ziolkowski R. W. 
Published: December 2005

AbstractAn ultra‐wideband antenna is designed using genetic optimization and the finite‐difference‐time‐domain (FDTD) method. Efficiency is enhanced by using the Green's function method (GFM) as an absorbing boundary condition (ABC) close to the antenna surface, and as a propagator to the radiated field at any observation point at each iteration step. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 348–354, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21346
Scattering from an annular slot on a radial waveguide
Authors: Kim Jae H. , Eom Hyo J. 
Published: December 2005

AbstractThe boundary‐value problem of scattering from an annular slot on a radial waveguide is solved. The scattered fields are expanded in terms of eigenfunctions based on the Fourier series and Hankel transform. Boundary conditions are enforced to constitute a set of simultaneous equations. A fast convergent series solution is obtained using residue calculus. Computations are performed to investigate radiation and coupling by an annular slot on a radial waveguide. Favorable agreement is observed between our theory and other existing results. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48:354–357, 2006; Published Online in Wiley InterScience (www.interscience.wiley.com) DOI 10.1002/mop.21347
Analytical calculation of radiated emissions from rectangular power bus using embedded capacitor in high‐speed packages and PCBs
Authors: Jeong Youchul , Kim Jaemin , Kwon Jong Hwa , Kim Joungho 
Published: December 2005

AbstractWe propose a method of analytical calculation of radiated emissions from a rectangular power bus using an embedded capacitor. Using this method, the radiated emissions of the test package are calculated accurately and the calculation is verified by far‐field measurement in an anechoic chamber. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48:358–361, 2006; Published Online in Wiley InterScience (www.interscience.wiley.com) DOI 10.1002/mop.21348
Three‐turn concave hemispherical helical antenna for satellite communication
Authors: Chen Canhui , Hu Binjie , Yung E. K. N. 
Published: December 2005

AbstractA novel hemispherical helical antenna is designed for satellite communications in this paper. This antenna can produce circular polarization radiation over a wide angular coverage of 113°. The input impedance varies very stably in the range of 1 < cλ < 1.15. The 3‐dB axial‐ratio bandwidth is found to be 13.5% with relatively high gain of 9 dB. The current distribution and radiation pattern will also be presented. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 361–363, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21349
Uniaxial dielectric media with hyperbolic dispersion relations
Authors: Mackay Tom G. , Lakhtakia Akhlesh , Depine Ricardo A. 
Published: December 2005

AbstractPlanewave propagation with hyperbolic/hyperboliclike characteristics in uniaxial dielectric media is investigated. The phase velocity is positive with respect to the time‐averaged Poynting vector for both evanescent and nonevanescent propagation in nondissipative media. A conceptualization of a uniaxial medium, which exhibits hyperboliclike planewave characteristics as a homogenized composite medium, is presented. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 363–367, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21350
Active integrated antenna using T‐shaped microstip‐line‐fed slot antenna
Authors: Choi Dong‐Hyuk , Park Seong‐Ook 
Published: December 2005

AbstractAn active integrated antenna (AIA), which consists of a T‐shaped microstrip‐line‐fed slot antenna, is proposed. Since the designed antenna has an electromagnetically coupled feedback loop, it can easily solve the problem of DC isolation between ports of the amplifier. The fabricated parallel feedback antenna oscillator shows stable oscillation at a frequency of 10.05 GHz. The measured EIRP is 37.79 mW, and the cross‐polarization levels are at least −15‐dB lower than those of co‐polarization for all directions. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 367–370, 2006; Published online in Wiley InterScience (www. interscience.wiley.com). DOI 10.1002/mop.21351
Application of the defected microstrip structure as a tuning technique for rectangular printed antennas
Authors: Tirado‐Mendez J. A. , Jardón‐Aguilar H. , Iturbide‐Sanchez F. 
Published: December 2005

AbstractThe present work establishes the use of the defected microstrip structure (DMS) as a novel method of tuning the central frequency of rectangular printed antennas. The error obtained from the predicted operating frequency and the measured one is less than 4%, without degrading the VSWR, radiation pattern, and antenna gain. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 370–373, 2006; Published online in Wiley InterScience (www. interscience.wiley.com). DOI 10.1002/mop.21352
Study of parallel coupled‐line microstrip filter in broadband
Authors: Chen Chia‐Chung , Kuo Jen‐Tsai , Jiang Meshon , Chin Albert 
Published: December 2005

AbstractA parallel coupled‐line microstrip filter is designed and implemented on PCB with its maximum bandwidth. In this paper, this filter has presented almost very good characteristics including the simulated bandwidth of 67%, the measured bandwidth of 64%, lower insertion loss of 1.27 dB, and flat response in the pass‐band. The maximum bandwidth fabricated on PCB shows good agreement with the theoretically calculated bandwidth of 70% due to the narrower gap size between the coupled lines. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 373–375, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21353
Practical impedance matching using genetic programming
Authors: Su Y. K. , Hou H. S. , Chang S. J. 
Published: December 2005

AbstractA genetic programming method for impedance matching is presented. The method is applied to an impedance‐matching problem where the element values available are restricted to a set of preferred values. The experimental results show that this method can effectively generate practical and economical solutions. Since it can additionally deal with other design considerations, this method is useful for practical impedance matching. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 375–377, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21354
Dual‐wideband rectangular dielectric resonator antenna for WLAN communications
Authors: Lim E. H. , Leung K. W. 
Published: December 2005

AbstractA dual and wideband single‐element rectangular dielectric resonator antenna (DRA) excited by a microstrip aperture is investigated experimentally. It provides two passbands in the ranges of 2.21–2.855 GHz and 4.385–5.455 GHz, which are popular bands for wireless local‐area networks (WLANs). The return loss, antenna gain, and radiation patterns of the proposed configuration are measured. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 378–380, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21355
Measured patterns of a resistive V‐dipole fed with a double‐Y balun
Authors: Venkatesan Jaikrishna , Scott Waymond R. 
Published: December 2005

AbstractThe performance of a double‐Y balun feeding a resistive V‐dipole is evaluated via antenna‐pattern measurements. An optical link is constructed for containing the feedline radiation to a laser receiver unit and the antenna under test (AUT), hence avoiding the uncertainty caused by cable radiation in a conventional antenna pattern‐measurement setup. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 380–383, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21356
Path‐loss characteristics in subway tunnels at 2.65 GHz
Authors: Choi Myung‐Sun , Kim Do‐Youn , Jo Han‐Shin , Yook Jong‐Gwan , Park Han‐Kyu 
Published: December 2005

AbstractThis paper presents the measurement of electromagnetic wave propagation in subway tunnels at f =2.6425GHz. The main goal of this work is to obtain more accurate knowledge of the propagation characteristics in straight and curved tunnels. Measurements have been conducted in four different types of tunnel courses: a straight tunnel, two curved tunnels (with 245‐m and 500‐m radius of curvature, respectively), and a tunnel that has both straight and curved sections. From the measured results, we analyze and compare the differences between the straight and curved tunnels, particularly with regard to path loss and the effect of path loss arising from different curvatures, and the characteristics of the combined tunnel (the straight and curved tunnel). The findings presented here should prove helpful in the estimation of link budget for satellite DMB service in tunnels and the determination of accurate propagation characteristics in tunnels. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 383–386, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21357
Improving the performance of double‐pass EDFA utilizing chirped bragg grating as feedback loop
Authors: Jamaludin M. Z. , Bakar A. A. A. , Naji A. W. , Rahman F. A. , Mahdi M. A. , Abdullah M. K. 
Published: December 2005

AbstractA new dispersion‐compensated double‐pass erbium‐doped fiber amplifier (EDFA) with high gain and improved noise‐figure characteristics is demonstrated using chirped fiber Bragg grating. The performance is compared with that of the conventional double‐pass EDFA. The signal gain is improved by as much as 18.6 dB at −40‐dBm signal power with negligible noise penalty. The proposed amplifier architecture can improve the signal gain and at the same time compensate the signal dispersion. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48:386‐388, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21358
Highly efficient anti‐stokes generation in irregularly multicore microstructure fiber with double zero‐dispersion wavelengths
Authors: Yan Pei‐Guang , Li Yi‐Gang , Ding Lei , Zhang Wei , Lu Ke‐Cheng , Jia Ya‐Qing , Zhang Tie‐Qun , Zhu Xiao‐Nong , Su Hong‐Xin , Guo Qin‐Lin 
Published: December 2005

AbstractIn this work, we demonstrate highly efficient anti‐Stokes signal generation inside an irregular multicore microstructure fiber, using unamplified femtosecond laser pulses. For this special type of fiber, there are randomly distributed cores with a diameter ranging from 0.6 to 1.5 μm. We have observed a large ratio of the amplitude of the anti‐Stokes wave to that of the pump wave in the output spectrum. Our simulation results indicate that the features of the two zero‐dispersion wavelengths of the fiber are responsible for meeting the phase‐matching condition of four‐wave mixing, which produces the observed large anti‐Stokes wave. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 389–393, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21359
ZT‐ADIPML: Unconditionally stable PML algorithm for FDTD simulations
Authors: Ramadan Omar 
Published: December 2005

AbstractUnconditionally stable formulations of the perfectly matched layer (PML) are presented for truncating linear dispersive finite‐difference time‐domain (FDTD) grids. In the proposed formulations, the 𝒵‐transform theory is employed in the alternating‐direction implicit FDTD (ADI‐FDTD) algorithm to obtain update equations for the field components in dispersive media. The validity of the proposed formulations is shown through a numerical example carried out in 1D linear Lorentz dispersive FDTD domain. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 393–396, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21360
New method for analysis of microstrip with finite‐width ground plane
Authors: Svacina Jiri 
Published: December 2005

AbstractThe paper contains an investigation of microstrips with finite‐width ground plane. The conformal mapping method and a new method of the so‐called moving perfect electric wall (MPEW) are used to obtain simple analytical relations for quasi‐TEM parameters. The computed results are compared with available data from other authors obtained through various numerical methods. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 396–399, 2006; Published online in Wiley InterScience (www. interscience.wiley.com). DOI 10.1002/mop.21361
A miniaturized antenna for 2G/3G frequency‐band applications
Authors: Borowiec Robert , Słobodzian Piotr M. 
Published: December 2005

AbstractA novel miniaturized printed monopole antenna suitable for cellular handset terminals is presented. A substantial reduction in antenna size was achieved due to the use of the inverted‐F antenna concept combined with a capacitive feeding system. The antenna operates in three frequency bands, that is, GSM 1800, PCS 1900, and UMTS, with VSWR ≤2.5. The compactness of the antenna structure allows it to be placed on the top as well as the bottom of a handset. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 399–402, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21362
A new bi‐faced log periodic printed antenna
Authors: Ávila‐Navarro E. , Blanes J. M. , Carrasco J. A. , Reig C. , Navarro E. A. 
Published: December 2005

AbstractIn this paper, a new design of a broadband planar printed antenna based on the academic log periodic antenna is presented. The antenna consists of a series of printed dipoles, distributed on both faces of the substrate. Some configurations are explored, with a different number of printed dipoles. These are designed, simulated, fabricated, and measured. The calculated and measured return losses and radiation patterns are presented. The utility of the proposed antenna associated with its frequency bandwidth is better than 80%. The measured absolute gain is 6.5 dBi, and the front‐to‐back ratio is around 8 dB. The presented antenna should find wide applications in wireless communication systems and phased arrays. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 402–405, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21363
Microstrip stepped‐impedance hairpin resonator low‐pass filter with defected ground structure
Authors: Cho Ju‐Hyun , Lee Jong‐Chul 
Published: December 2005

AbstractIn this paper, a new microstrip stepped‐impedance hairpin resonator (SIR) low‐pass filter (LPF) using a defected ground structure (DGS) is proposed. The proposed SIR hairpin low‐pass filter using DGS provides a very sharp cutoff frequency response with low insertion loss. Furthermore, the SIR hairpin low‐pass filter can provide attenuation poles for the wide‐stopband characteristic due to the resonance characteristic of the DGS. Design parameters for the SIR low‐pass filter are derived based on stepped‐impedance theory and the equivalent‐circuit model for the DGS. The experimental results show excellent agreement with the theoretical simulation results. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 405–408, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21364
Retrodirective array for RFID and microwave tracking beacon applications
Authors: Chiu L. , Yum T. Y. , Chang W. S. , Xue Q. , Chan C. H. 
Published: December 2005

AbstractA novel and compact four‐element retrodirective array (RDA) prototype is realized. It demonstrates excellent performance in terms of retrodirectivity and sensitivity. Each element employs a phase conjugator (a biased FET mixer) with a conversion gain of 5.46 dB. The LO is set at 19.61 GHz and is pumped into the element while the RF operates at 9.8 GHz. The mixer generates an IF signal with a frequency offset of 10 MHz from the RF to separate the transponded signal from the interrogating signal. Retrodirectivity is observed over a wide range of incidence angles from −50° to +50°. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 409–411, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21365