Novel Compact Ultra-Wideband Bandpass Filter by Application of Short-Circuited Stubs and Stepped-Impedance-Resonator Chun-Ping Chen; Zhewang Ma; Tetsuo Anada
巻：E91C,
号：11,
開始ページ：1786,
終了ページ：1792, 2008年11月
To realize the compact ultra-wideband (UWB) bandpass filters, a novel filter prototype with two short-circuited stubs loaded at both sides of a stepped-impedance resonator (SIR) via the parallel coupled lines is proposed based on a distributed filter synthesis theory. The equivalent circuit of this filter is established, while the corresponding 7-pole Chebyshev-type transfer function is derived for filter synthesis. Then, a distributed-circuit-based technique was presented to synthesize the elements' values of this filter. As an example, a FCC UWB filter with the fractional bandwidth (FWB) @ -10dB up to 110% was designed using the proposed prototype and then re-modeled by commercial microwave circuit simulator to verify the correctness and accuracy of the synthesis theory. Furthermore. in terms of EM simulator, the filter was further-optimized and experimentally-realized by using microstrip line. Good agreements between the measurement results and theoretical ones validate the effectiveness of our technique. In addition, compared with the conventional SIR-type UWB filter without short-circuited stubs, the new one significantly improves the selectivity and out-of-band characteristics (especially in lower one -45 dB @ 1-2 GHz) to satisfy the FCC's spectrum mask. The designed filter also exhibits very compact size, quite low insertion loss, steep skirts, flat group delay and the easily-fabricatable structure (the coupling gap dimension in this filter is 0.15 mm) as well. Moreover, it should be noted that, in terms of the presented design technique, the proposed filter prototype can be also used to easily realize the UWB filters with other FBW even greater than 110%.
英語
DOI：https://doi.org/10.1093/ietele/e91-c.11.1786DOI ID：10.1093/ietele/e91-c.11.1786,
ISSN：0916-8524,
eISSN：1745-1353,
CiNii Articles ID：10026820144,
Web of Science ID：WOS:000261410300011 A new design method of microstrip dual-band bandstop filters Katsunori Kikuchi; Zhewang Ma; Tetsuo Anada
巻：50,
号：11,
開始ページ：2888,
終了ページ：2892, 2008年11月
A generic lumped-element circuit of dual-band bandstop filter (DBBSF) is proposed based oil novel composite shunt resonators, and its design method is developed with closed-form-formulas. As all example, a DBBSF with center frequencies of 1.7 and 2.3 GHz is designed and fabricated using microstrip lines. The measured frequency response agrees excellently with the theoretical predictions, validating well the proposed design theory and filter structure. (c) 2008 Wiley Periodicals, Inc.
英語
DOI：https://doi.org/10.1002/mop.23822DOI ID：10.1002/mop.23822,
ISSN：0895-2477,
Web of Science ID：WOS:000259534800043 Synthesis of ultrawideband bandpass filter by multisection of commensurate stepped-impedance resonators Chun-Ping Chen; Zhewang Ma; Tetsuo Anada
巻：50,
号：10,
開始ページ：2635,
終了ページ：2639, 2008年10月
A novel filter prototype composed of multiselection of stepped impedance resonators (SIRs) is proposed to realize the wideband bandpass (UWB) filter. The relation between the modes number and stage number of resonators is first discussed, followed by the derivation of the corresponding Chebyshev filtering Junction. Furthermore, the equivalent circuit model of this new filter prototype is established based on the transmission-line theory for filter synthesis. As air example, a FCC UWB filter is synthesized with the proposed filter Prototype to possess a passband from 3.1 to 10.6 GHz (fractional band-width is about 110%). The synthesized circuit model are further optimized by EM simulator, fabricated in microstrip line. cold characterized by network analyzer. The good agreement between the measured and predicted frequency responses validates the effectiveness of newly proposed synthesis approach. In addition, the designed filter exhibits good characteristics of comparatively low insertion loss, quite sharp skirts. very flat group delay, and good stopband (especially in lower one) as well. (C) 2008 Wiley Periodicals, Inc.
英語
DOI：https://doi.org/10.1002/mop.23756DOI ID：10.1002/mop.23756,
ISSN：0895-2477,
Web of Science ID：WOS:000258612900046 Determination of wave propagation properties for multilayered dielectric waveguide by semivectorial beam propagation method with Douglas scheme Chun-Ping Chen; Zhewang Ma; Tetsuo Anada; Jui-Pang Hsu
巻：50,
号：10,
開始ページ：2521,
終了ページ：2524, 2008年10月
An improved parabolic-equation-based numerical method with Douglas scheme is developed for modeling the new 3D multilayered dielectric transmission waveguides. Unlike, the traditional one, such waveguides are constructed by putting the multilayered dielectric cladding with step indices property on et silicon substrate. Tire propagation properties of widely used polarization-maintaining waveguides and anti-resonant reflecting dielectric waveguide are investigated by this method as examples. The discussion on the numerical dispersion and radiation loss property is also included to validate this unproved (earn propagation method (or BPM). (C) 2008 Wiley Periodicals, Inc.
英語
DOI：https://doi.org/10.1002/mop.23725DOI ID：10.1002/mop.23725,
ISSN：0895-2477,
Web of Science ID：WOS:000258612900012 Design and implementation of microwave dual-band bandpass filters using microstrip composite resonators Zhewang Ma; Taichi Shimizu; Yoshio Kobayashi; Tetsuo Anada; Gen Hagiwara
巻：50,
号：6,
開始ページ：1628,
終了ページ：1632, 2008年06月
In this article, a novel type of dual-band bandpass filter (DBBPF) is proposed by using microstrip composite resonators, and its design method is developed based on the lumped-element equivalent circuit of the filter. Both the midband frequencies and the passband widths of the dual bands of the filter can be controlled separately. Four DBBPFs with different specifications are designed, fabricated, and tested, and the measured frequency responses agree favorably with theoretical predictions, validating sufficiently the proposed design theory and filter structures. (c) 2008 Wiley Periodicals, Inc.
英語
DOI：https://doi.org/10.1002/mop.23451DOI ID：10.1002/mop.23451,
ISSN：0895-2477,
Web of Science ID：WOS:000255355700052 Dual-mode square ring resonators for design of millimeter-wave ultra-wideband bandpass filter Peng Cai; Zhewang Ma; Xuehui Guan; Yong Zhang; Bin Chen; Bo Xu
巻：50,
号：4,
開始ページ：879,
終了ページ：883, 2008年04月
In this article, a millimeter-wave ultra-wideband (UWB) bandpass filter is proposed and implemented by cascading two dual-mode square ring resonators loaded with lambda(0)/4 and 3 lambda(0)/4 open timing stubs, aiming at transmitting the signals in the UWB passband of 22-29 GHz. Formulae based on even- and odd-mode analysis are derived to facilitate the design of transmission zeros of these ring resonators. Because of the transmission zeros in the lower and upper stopbands, the proposed filter exhibits sharp attenuations near the passband as well as very wide stopband. The measured responses of the filter agree well with the design simulation, and satisfy well the Federal Communications Commission's indoor limit on millimeter-wave UWB applications over very wide frequency band. (c) 2008 Wiley Periodicals, Inc.
英語
DOI：https://doi.org/10.1002/mop.23237DOI ID：10.1002/mop.23237,
ISSN：0895-2477,
eISSN：1098-2760,
Web of Science ID：WOS:000254055700012 A microstrip dual-band bandpass filter with reduced size and improved stopband characteristics Xuehui Guan; Zhewang Ma; Peng Cai; Tetsuo Anada; Gen Hagiwara
巻：50,
号：3,
開始ページ：618,
終了ページ：620, 2008年03月
A novel compact microstrip dual-band bandpass filter (BPF) is developed with remarkably improved stopband characteristics. Two-square open-loop resonators are embedded in a U-shaped resonator to achieve a significant size reduction of the filter. Meanwhile, a cross-coupling between nonadjacent resonators is exploited to produce multiple transmission zeros in the stopbands of the filter. As a consequence, wide stopbands with sharp and large attenuations are obtained. Theoretical and measured frequency responses of the designed filter show a good agreement. (c) 2008 Wiley Periodicals, Inc.
英語
DOI：https://doi.org/10.1002/mop.23154DOI ID：10.1002/mop.23154,
ISSN：0895-2477,
Web of Science ID：WOS:000253106400021 Novel Compact Ultra-Wideband Bandpass Filter by Application of Short-Circuited Stubs and Stepped-Impedance-Resonator C. P. Chen; Z. W. Ma; T. Anada
Ieice Transactions on Electronics,
巻：E91-C,
号：11,
開始ページ：1786,
終了ページ：1792, 2008年
DOI：https://doi.org/10.1093/ietele/e91-c.11.1786DOI ID：10.1093/ietele/e91-c.11.1786,
ISSN：0916-8524,
CiNii Articles ID：10026820144 Further study on coaxial-probe-based two-thickness-method for nondestructive and broadband measurement of complex EM-parameters of absorbing material Chun-Ping Chen; Deming Xu; Zhewang Ma; Tetsuo Anada
巻：E90C,
号：9,
開始ページ：1763,
終了ページ：1769, 2007年09月
Two-Thickness-Method (TTM) based on an open-ended coaxial probe was investigated with an emphasis on uncertainty analysis to perfect this technique. Uncertainty equations in differential forms are established for the simultaneous measurement of complex electromagnetic (EM) parameters in the systematical consideration of various error factors in measurement. Worst-case differential uncertainty equations were defined while the implicit partial derivation techniques were used to find the coefficients in formulation. The relations between the uncertainties and test sample's thicknesses were depicted via 3D figures, while the influence of the coaxial line's dimension on the measurement accuracy is also included based on the same analysis method. The comparisons between the measured errors and theoretical uncertainty prediction are given for several samples, which validate the effectiveness of our analysis.
英語
DOI：https://doi.org/10.1093/ietele/e90-c.9.1763DOI ID：10.1093/ietele/e90-c.9.1763,
ISSN：0916-8524,
eISSN：1745-1353,
CiNii Articles ID：110007538939,
Web of Science ID：WOS:000250095300017 高温超電導マイクロストリップ型フィルタの研究
馬 哲旺
総合研究機構研究プロジェクト研究成果報告書, 号：5(18年度), 開始ページ：606, 終了ページ：607, 2007年
Further study on coaxial-probe-based two-thickness-method for nondestructive and broadband measurement of complex EM-parameters of absorbing material 馬 哲旺
巻：E90-C,
号：9,
開始ページ：1763,
終了ページ：1769, 2007年
DOI：https://doi.org/10.1093/ietele/e90-c.9.1763DOI ID：10.1093/ietele/e90-c.9.1763,
ISSN：0916-8524,
CiNii Articles ID：110007538939 高温超電導マイクロストリップ型フィルタの研究
馬 哲旺
号：5(18年度), 開始ページ：606, 終了ページ：607, 2007年
Dual-mode bandpass filters using microstrip slotted equilateral triangular patch resonators WL Hu; ZW Ma; Y Kobayashi; T Anada; G Hagiwara
巻：E89C,
号：4,
開始ページ：503,
終了ページ：508, 2006年04月
Two compact and low loss dual-mode filters are proposed by using degenerate modes of slotted triangular microstrip patch resonators. The geometrical size and radiation loss of the triangular patch are reduced simultaneously by loading both horizontal and vertical slots. The resonant frequencies of two degenerate modes can be easily controlled by varying the dimensions and positions of the slots. A two-pole dualmode filter operating at 3.94 GHz with a fractional bandwidth of 4.3% is designed, fabricated, and measured. The measured results verify well the theoretical predictions.
英語
DOI：https://doi.org/10.1093/ietele/e89-c.4.503DOI ID：10.1093/ietele/e89-c.4.503,
ISSN：0916-8524,
eISSN：1745-1353,
CiNii Articles ID：110007503125,
Web of Science ID：WOS:000237203600009 Synthesizing microstrip dual-band bandpass filters using frequency transformation and circuit conversion technique XH Guan; ZW Ma; P Cai; Y Kobayashi; T Anada; G Hagiwara
巻：E89C,
号：4,
開始ページ：495,
終了ページ：502, 2006年04月
A novel method is proposed to synthesize dual-band bandpass filters (BPFs) from a prototype lowpass filter. By implementing successive frequency transformations and circuit conversions, a new filter topology is obtained which consists of only admittance inverters and series or shunt resonators, and is thereby easy to be realized by using conventional distributed elements. A microstrip dual-band BPI" with central frequencies of 1.8 GHz and 2.4 GHz is designed and fabricated using microstrip lines and stubs. The simulated and measured results show a good agreement and validate thereby the proposed theory.
英語
DOI：https://doi.org/10.1093/ietele/e89-c.4.495DOI ID：10.1093/ietele/e89-c.4.495,
ISSN：0916-8524,
eISSN：1745-1353,
CiNii Articles ID：110007503124,
Web of Science ID：WOS:000237203600008 A novel compact HTS interdigital bandpass filter using CPW quarter-wavelength resonators Z Ma; T Kawaguchi; Y Kobayashi; D Koizumi; K Satoh; S Narahashi
巻：E89C,
号：2,
開始ページ：140,
終了ページ：144, 2006年02月
A novel high temperature superconducting interdigital bandpass filter is proposed by using coplanar waveguide quarterwavelength resonators. The CPW resonators are arranged in parallel, and consequently the filter becomes very compact. The filter is a 5-pole Cheby-shev BPF with a midband frequency of 5.0 GHz and an equal-ripple fractional bandwidth of 3.2%. It is fabricated using a YBCO film deposited on an MgO substrate. The measured filtering characteristics agree well with EM simulations and show a low insertion loss in spite of the small size of the filter.
英語
DOI：https://doi.org/10.1093/ietele/e89-c.2.140DOI ID：10.1093/ietele/e89-c.2.140,
ISSN：0916-8524,
eISSN：1745-1353,
CiNii Articles ID：110004657594,
Web of Science ID：WOS:000235509400008 マイクロストリップスパイラル共振器を用いた楕円関数特性帯域通過フィルタの設計(回路・デバイス, <特集>マイクロ波論文(大学発))
河口 民雄; 馬 哲旺; 小林 禧夫
電子情報通信学会論文誌. C, エレクトロニクス, 巻：J88-C, 号：12, 開始ページ：1040, 終了ページ：1048, 2005年
Miniaturized High-Temperature Superconducting Microstrip and Coplanar Waveguide Filters(Resonators & Filters, Recent Technologies of Microwave and Millimeter-Wave Devices Focusing on Miniaturization and Advancement in Performance with ・・・ 馬 哲旺
IEICE transactions on electronics,
巻：E88-C,
号：7,
開始ページ：1406,
終了ページ：1411, 2005年
Miniaturized High-Temperature Superconducting Microstrip and Coplanar Waveguide Filters(Resonators & Filters, <Special Section>Recent Technologies of Microwave and Millimeter-Wave Devices Focusing on Miniaturization and Advancement in Performance with Their Applications)
DOI：https://doi.org/10.1093/ietele/e88-c.7.1406DOI ID：10.1093/ietele/e88-c.7.1406 スパイラル共振器を用いた小形高温超電導マイクロ波フィルタの研究<論文>河口 民雄; 馬 哲旺; 小林 禧夫
埼玉大学紀要, 工学部, 第1部論文集,
巻：38,
号：1,
開始ページ：14,
終了ページ：17, 2005年
In this paper, two types of miniaturized high-temperature superconductor filters are described. The first type is developed by using small-sized microstrip spiral resonators, and the second type by coplanar waveguide quarter-wavelength resonators. The filters have greatly reduced size compared with most previous HTS filters. They are designed by employing an electromagnetic simulator in combination with appropriately chosen equivalent circuits. Their measured frequency responses agree well with theoretical predictions, and show low insertion losses in spite of their small sizes.
埼玉大学工学部, 日本語
ISSN：1880-4446,
CiNii Articles ID：120001370667 Design and Measurement of a Miniaturized HTS Filter Using Microstrip Spiral Resonators(Microwaves, Superconducting Electronic Devices and Their Applications) 馬 哲旺
IEICE transactions on electronics,
巻：E88-C,
号：2,
開始ページ：216,
終了ページ：220, 2005年
DOI：https://doi.org/10.1093/ietele/E88-C.2.216DOI ID：10.1093/ietele/E88-C.2.216,
ISSN：0916-8524,
CiNii Articles ID：110003215110 Microstrip Lowpass Filters with Reduced Size and Improved Stopband Characteristics(Recent Trends of Microwave and Millimeter-Wave Passive Circuit Components and Technologies for Improvement of Characteristics) 馬 哲旺
IEICE transactions on electronics,
巻：E88-C,
号：1,
開始ページ：62,
終了ページ：67, 2005年
DOI：https://doi.org/10.1093/ietele/E88-C.1.62DOI ID：10.1093/ietele/E88-C.1.62,
ISSN：0916-8524,
CiNii Articles ID：110003215067 Miniaturized High-Temperature Superconductor Bandpass Filters Using Microstrip S-Type Spiral Resonators(Recent Trends of Microwave and Millimeter-Wave Passive Circuit Components and Technologies for Improvement of Characteristics) 馬 哲旺
IEICE transactions on electronics,
巻：E88-C,
号：1,
開始ページ：57,
終了ページ：61, 2005年
DOI：https://doi.org/10.1093/ietele/E88-C.1.57DOI ID：10.1093/ietele/E88-C.1.57,
ISSN：0916-8524,
CiNii Articles ID：110003215066 マイクロストリップスパイラル共振器を用いた楕円関数特性帯域通過フィルタの設計(回路・デバイス, <特集>マイクロ波論文(大学発))
河口 民雄; 馬 哲旺; 小林 禧夫
巻：J88-C, 号：12, 開始ページ：1040, 終了ページ：1048, 2005年
Miniaturized High-Temperature Superconducting Microstrip and Coplanar Waveguide Filters(Resonators & Filters, Recent Technologies of Microwave and Millimeter-Wave Devices Focusing on Miniaturization and Advancement in Performance with ・・・ 馬 哲旺
巻：E88-C,
号：7,
開始ページ：1406,
終了ページ：1411, 2005年
Miniaturized High-Temperature Superconducting Microstrip and Coplanar Waveguide Filters(Resonators & Filters, <Special Section>Recent Technologies of Microwave and Millimeter-Wave Devices Focusing on Miniaturization and Advancement in Performance with Their Applications)
DOI：https://doi.org/10.1093/ietele/e88-c.7.1406DOI ID：10.1093/ietele/e88-c.7.1406 スパイラル共振器を用いた小形高温超電導マイクロ波フィルタの研究<論文>河口 民雄; 馬 哲旺; 小林 禧夫
埼玉大学紀要. 工学部 第1編 第1部 論文集,
巻：38,
号：1,
開始ページ：14,
終了ページ：17, 2005年
In this paper, two types of miniaturized high-temperature superconductor filters are described. The first type is developed by using small-sized microstrip spiral resonators, and the second type by coplanar waveguide quarter-wavelength resonators. The filters have greatly reduced size compared with most previous HTS filters. They are designed by employing an electromagnetic simulator in combination with appropriately chosen equivalent circuits. Their measured frequency responses agree well with theoretical predictions, and show low insertion losses in spite of their small sizes.
埼玉大学工学部, 日本語
ISSN：1880-4446,
CiNii Articles ID：120001370667 Design and Measurement of a Miniaturized HTS Filter Using Microstrip Spiral Resonators(Microwaves, Superconducting Electronic Devices and Their Applications) 馬 哲旺
巻：E88-C,
号：2,
開始ページ：216,
終了ページ：220, 2005年
DOI：https://doi.org/10.1093/ietele/E88-C.2.216DOI ID：10.1093/ietele/E88-C.2.216,
ISSN：0916-8524,
CiNii Articles ID：110003215110 Microstrip Lowpass Filters with Reduced Size and Improved Stopband Characteristics(Recent Trends of Microwave and Millimeter-Wave Passive Circuit Components and Technologies for Improvement of Characteristics) 馬 哲旺
巻：E88-C,
号：1,
開始ページ：62,
終了ページ：67, 2005年
DOI：https://doi.org/10.1093/ietele/E88-C.1.62DOI ID：10.1093/ietele/E88-C.1.62,
ISSN：0916-8524,
CiNii Articles ID：110003215067 Miniaturized High-Temperature Superconductor Bandpass Filters Using Microstrip S-Type Spiral Resonators(Recent Trends of Microwave and Millimeter-Wave Passive Circuit Components and Technologies for Improvement of Characteristics) 馬 哲旺
巻：E88-C,
号：1,
開始ページ：57,
終了ページ：61, 2005年
DOI：https://doi.org/10.1093/ietele/E88-C.1.57DOI ID：10.1093/ietele/E88-C.1.57,
ISSN：0916-8524,
CiNii Articles ID：110003215066 Design and diagnosis of a 5 GHz 10-pole HTS bandpass filter using CPW quarter-wavelength resonators
ZW Ma; H Suzuki; Y Kobayasi
巻：E86C, 号：2, 開始ページ：144, 終了ページ：149, 2003年02月
A high temperature superconductor (HTS) 5 GHz 10-pole bandpass filter (BPF) is designed by using coplanar waveguide (CPW) quarter-wave length resonators. The 10-pole Chebyshev BPF has a center frequency 5.0 GHz and a fractional bandwidth 3.2%. Based on all equivalent circuit with J- and K-inverters, the filter is first designed by using an EM simulator. Next an optimization algorithm is employed to diagnose the discrepancy between the filter responses calculated by the EM simulator and the equivalent circuit. Adjustment of the dimensions of the filter is made thereby. The frequency response of the adjusted filter satisfies well the design specifications.
英語
ISSN：0916-8524, eISSN：1745-1353, Web of Science ID：WOS:000181032000007
Theory for the Design of a Filter Having One Cross Coupling Path to Realize Transmission Zeros(Special Issue on Microwave and Millimeter Wave Technology)
馬 哲旺
IEICE transactions on electronics, 巻：E86-C, 号：8, 開始ページ：1690, 終了ページ：1698, 2003年
On the Error of the Unloaded Q-Factor of a Transmission-Type Resonator Measured by the Insertion Loss Method and the Return Loss Method(Special Issue on Microwave and Millimeter Wave Technology)
馬 哲旺
IEICE transactions on electronics, 巻：E86-C, 号：8, 開始ページ：1672, 終了ページ：1677, 2003年
Design of a Grooved Circular Cavity for Dielectric Substrate Measurements in Millimeter Wave Region(Special Issue on Microwave and Millimeter Wave Technology)
馬 哲旺
IEICE transactions on electronics, 巻：E86-C, 号：8, 開始ページ：1715, 終了ページ：1720, 2003年
Theory for the Design of a Filter Having One Cross Coupling Path to Realize Transmission Zeros(Special Issue on Microwave and Millimeter Wave Technology)
馬 哲旺
巻：E86-C, 号：8, 開始ページ：1690, 終了ページ：1698, 2003年
On the Error of the Unloaded Q-Factor of a Transmission-Type Resonator Measured by the Insertion Loss Method and the Return Loss Method(Special Issue on Microwave and Millimeter Wave Technology)
馬 哲旺
巻：E86-C, 号：8, 開始ページ：1672, 終了ページ：1677, 2003年
Design of a Grooved Circular Cavity for Dielectric Substrate Measurements in Millimeter Wave Region(Special Issue on Microwave and Millimeter Wave Technology)
馬 哲旺
巻：E86-C, 号：8, 開始ページ：1715, 終了ページ：1720, 2003年
A Low-Loss 5 GHz Bandpass Filter Using HTS Quarter-Wavelength Coplanar Waveguide Resonators(<特集>Special Issue on Superconductive Electronics)
馬 哲旺
IEICE transactions on electronics, 巻：E85-C, 号：3, 開始ページ：714, 終了ページ：719, 2002年
A Low-Loss 5 GHz Bandpass Filter Using HTS Quarter-Wavelength Coplanar Waveguide Resonators(<特集>Special Issue on Superconductive Electronics)
馬 哲旺
巻：E85-C, 号：3, 開始ページ：714, 終了ページ：719, 2002年
Analysis of dielectric resonators using the FDTD method combined with the Pade interpolation technique
ZW Ma; Y Kobayashi
巻：E84C, 号：7, 開始ページ：973, 終了ページ：976, 2001年07月
The finite-difference time-domain (FDTD) method incorporating Berenger's PML absorbing boundary condition is developed to model three-dimensional dielectric resonators. The fast Fourier transform (FFT) coupled with the Fade interpolation technique is employed to obtain frequency domain results with satisfactory resolution and accuracy, and to reduce the computation time significantly compared with that needed when the conventional FFT algorithm is used. Computed resonant frequencies of two types of cylindrical dielectric resonators are compared with theoretical and measured results. A good agreement is observed.
英語, 速報，短報，研究ノート等（学術雑誌）
ISSN：0916-8524, eISSN：1745-1353, Web of Science ID：WOS:000169815900018
Performance of the Modified PML Absorbing Boundary Condition for Propagating and Evanescent Waves in Three-Dimensional Structures (Special Issue on Computational Electromagnetics)
馬 哲旺
IEICE transactions on electronics, 巻：E81-C, 号：12, 開始ページ：1892, 終了ページ：1897, 1998年
Performance of the Modified PML Absorbing Boundary Condition for Propagating and Evanescent Waves in Three-Dimensional Structures (Special Issue on Computational Electromagnetics)
馬 哲旺
巻：E81-C, 号：12, 開始ページ：1892, 終了ページ：1897, 1998年
Efficient characterization of complex H-plane waveguide pi-junction and cross-junctions
ZW Ma; E Yamashita
巻：E79C, 号：3, 開始ページ：444, 終了ページ：452, 1996年03月
An efficient full-wave approach for the accurate characterization of a H-plane waveguide pi-junction with an inductive post and a waveguide cross-junction is proposed. By employing the port reflection coefficient method (PRCM), the analysis and solution procedures of these complex waveguide junctions are greatly simplified and only the calculation of field reflections caused by the simplest waveguide step-junction discontinuities are required. The reflections are easily determined by the mode-matching technique. Scattering parameters of these junctions are provided and discussed in terms of the working frequency and the geometrical dimensions of the junctions. Calculated results are compared with those of other papers and measurements, all show good agreement.
英語
ISSN：0916-8524, eISSN：1745-1353, Web of Science ID：WOS:A1996UC34200027
Port Reflection Coefficient Method for Solving Multi-Port Microwave Network Problems Zhewang Ma; Eikichi Ymashita; Port Reflection Coefficient Method for Solving Multi-Port; Microwave Network Problems; IEEE Trans. Microwave; Theory Tedh; vol.MTT; Fe
IEEE Trans.,
巻：43,
号：2,
開始ページ：331,
終了ページ：337, 1995年
DOI：https://doi.org/10.1109/22.348092DOI ID：10.1109/22.348092,
ISSN：0018-9480,
CiNii Articles ID：80008159434 Port Reflection Coefficient Method for Solving Multi-Port Microwave Network Problems Zhewang Ma; Eikichi Ymashita; Port Reflection Coefficient Method for Solving Multi-Port; Microwave Network Problems; IEEE Trans. Microwave; Theory Tedh; vol.MTT; Fe
巻：43,
号：2,
開始ページ：331,
終了ページ：337, 1995年
DOI：https://doi.org/10.1109/22.348092DOI ID：10.1109/22.348092,
ISSN：0018-9480,
CiNii Articles ID：80008159434 Leakage Characteristics of Groove Guide Having a Conductor Strip Zhewang Ma; Eikichi Yamashita; Leakage Characteristics of; Groove Guide; Having a Conductor Strip; IEEE Trans. Microwave; Theory Tech; vol.MTT
IEEE Trans.,
巻：42,
号：10,
開始ページ：1925,
終了ページ：1931, 1994年
DOI：https://doi.org/10.1109/22.320775DOI ID：10.1109/22.320775,
ISSN：0018-9480,
CiNii Articles ID：80007910144 Leakage Characteristics of Groove Guide Having a Conductor Strip Zhewang Ma; Eikichi Yamashita; Leakage Characteristics of; Groove Guide; Having a Conductor Strip; IEEE Trans. Microwave; Theory Tech; vol.MTT
巻：42,
号：10,
開始ページ：1925,
終了ページ：1931, 1994年
DOI：https://doi.org/10.1109/22.320775DOI ID：10.1109/22.320775,
ISSN：0018-9480,
CiNii Articles ID：80007910144 TRANSVERSE SCATTERING MATRIX FORMULATION FOR A CLASS OF WAVE-GUIDE EIGENVALUE PROBLEMS ZW MA; E YAMASHITA; SJ XU
巻：41,
号：6-7,
開始ページ：1044,
終了ページ：1051, 1993年06月
Based on the mode-matching procedure, a unified transverse scattering matrix formulation is presented for the characterization of a class of waveguide eigenvalue problems, which include not only closed but also open structures. As examples, calculations are carried out on the dispersion characteristics of ridged waveguides and its variations, nonradiative dielectric (NRD) waveguides, groove guides, microstrip lines, finlines, and coplanar waveguides. Comparisons with published data are made, which verify the versatility and accuracy of this method. Besides its generality, this approach is also superior to some other techniques in simplicity and numerical efficiency.
英語
DOI：https://doi.org/10.1109/22.238522DOI ID：10.1109/22.238522,
ISSN：0018-9480,
CiNii Articles ID：80007338489,
Web of Science ID：WOS:A1993MC68000021 Hybrid-Mode Analysis of Planar Transmission Lines with Arbitrary Metallization Cross Section Zhewang Ma; Eikichi Yamashita; Shanjia Xu
IEEE Trans.,
巻：41,
号：3,
開始ページ：491,
終了ページ：497, 1993年
DOI：https://doi.org/10.1109/22.223750DOI ID：10.1109/22.223750,
ISSN：0018-9480,
CiNii Articles ID：80007189975 Hybrid-Mode Analysis of Planar Transmission Lines with Arbitrary Metallization Cross Section Zhewang Ma; Eikichi Yamashita; Shanjia Xu
巻：41,
号：3,
開始ページ：491,
終了ページ：497, 1993年
DOI：https://doi.org/10.1109/22.223750DOI ID：10.1109/22.223750,
ISSN：0018-9480,
CiNii Articles ID：80007189975
