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IEICE Trans

Kouji WADA

A Dual-Band Comb-Line Filter Using a Half-Wavelength Stripline Nesting a Quarter-Wavelength Coplanar Waveguide Resonator
Shoichi KITAZAWA Masahiro GESHIRO Kenta ISHIMARU Masaharu OHASHI Hideaki FUJIMOTO Kouji WADA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/09/01
Vol. E90-B  No. 9  pp. 2439-2446
Type of Manuscript:  Special Section PAPER (Special Section on 2006 International Symposium on Antennas and Propagation)
Category: Electromagnetics
Keyword: 
dual band, band pass filter, resonator, 
 Summary | Full Text:PDF
Realization of Attenuation Poles, Spurious Resonance Suppression and Size Reduction by Microstrip SIR Loaded with Dielectric Rods
Ramesh K. POKHAREL Kouji WADA Osamu HASHIMOTO Takeshi TAKAHASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/12/01
Vol. E88-C  No. 12  pp. 2302-2309
Type of Manuscript:  Special Section PAPER (Special Section on Wireless Technologies and Computational Electromagnetics)
Category: Devices
Keyword: 
attenuation pole, dielectric rods, FDTD method, spurious responses, SIR, tapped λ/2 microstrip resonator, 
 Summary | Full Text:PDF
Out-of-Band Improvement by Microstrip Line BPFs with Multiple Attenuation Poles in Stopband Using Various Conditions of Coupling Length of Partially Coupled-Line Section
Kouji WADA Ramesh K. POKHAREL Takanobu OHNO Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/07/01
Vol. E88-C  No. 7  pp. 1430-1439
Type of Manuscript:  Special Section PAPER (Special Section on Recent Technologies of Microwave and Millimeter-Wave Devices Focusing on Miniaturization and Advancement in Performance with Their Applications)
Category: Resonators & Filters
Keyword: 
coupled-line BPF, attenuation poles, out-of-band characteristics, spurious responses, microstrip line, 
 Summary | Full Text:PDF
Bandpass Filters Using Tunable Half-Wavelength Resonators with Transmission Zeros
Kouji WADA Shinya WATANABE Ryousuke SUGA Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/01/01
Vol. E88-C  No. 1  pp. 68-76
Type of Manuscript:  Special Section PAPER (Special Section on Recent Trends of Microwave and Millimeter-Wave Passive Circuit Components and Technologies for Improvement of Characteristics)
Category: 
Keyword: 
tunable half-wavelength resonator, tap-coupling, bandpass filter, transmission zero, 
 Summary | Full Text:PDF
A Method for Evaluating Door Structure of Microwave Oven
Kouta MATSUMOTO Osamu HASHIMOTO Kouji WADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2004/11/01
Vol. E87-C  No. 11  pp. 1997-2000
Type of Manuscript:  LETTER
Category: Electromagnetic Theory
Keyword: 
microwave oven, combined waves, FDTD method, shielding effectiveness, 
 Summary | Full Text:PDF
A Method for LTCC Resonators to Realize Improved-Resonant Characteristics on Reduced-Size Microstrip Structure
Ramesh K. POKHAREL Kouji WADA Osamu HASHIMOTO Takeshi TAKAHASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2004/09/01
Vol. E87-C  No. 9  pp. 1517-1523
Type of Manuscript:  Special Section PAPER (Special Section on Wave Technologies for Wireless and Optical Communications)
Category: Components and Devices
Keyword: 
dielectric rods, FDTD method, microstrip resonator, spurious responses, attenuation pole, 
 Summary | Full Text:PDF
Measurement of Complex Permittivity for Liquid Phantom by Transmission Line Method Using Coaxial Line
Kouji SHIBATA Kensuke TANI Osamu HASHIMOTO Kouji WADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2004/05/01
Vol. E87-C  No. 5  pp. 689-693
Type of Manuscript:  Special Section PAPER (Special Section on Advances in Characterization and Measurement Technologies for Microwave and Millimeter-Wave Materials, Devices and Circuits)
Category: General Methods, Materials, and Passive Circuits
Keyword: 
measurement of complex pemittivity, liquid phantom, transmission line method, coaxial line, 
 Summary | Full Text:PDF
Location of Multiple Transmission Zeros by Tap-Coupling Technique for Bandpass Filters and Duplexers Using Short-Ended λ/2 Resonators
Kouji WADA Yoshiyuki AIHARA Tomohide KAMIYAMA Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/12/01
Vol. E86-C  No. 12  pp. 2403-2411
Type of Manuscript:  Special Section PAPER (Special Issue on Recent Trends on Microwave and Millimeter Wave Application Technology)
Category: Passive(Filter)
Keyword: 
short-ended λ/2 resonator, multiple transmission zeros, tap-coupling, bandpass filter, duplexer, 
 Summary | Full Text:PDF
Realization of Low Spurious Responses by Various Bandpass Filters Using Open-Ended λ/2 Resonators
Kouji WADA Takanobu OHNO Kouichi NAKAGAWA Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/12/01
Vol. E86-C  No. 12  pp. 2394-2402
Type of Manuscript:  Special Section PAPER (Special Issue on Recent Trends on Microwave and Millimeter Wave Application Technology)
Category: Passive(Filter)
Keyword: 
open-ended λ/2 resonator, bandpass filter, point-coupling technique, low spurious responses, attenuation poles, 
 Summary | Full Text:PDF
A Class of a Planar Duplexer Consisting of BPFs with Attenuation Poles Designed by Manipulating Tapped Resonators
Kouji WADA Takanobu OHNO Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/08/01
Vol. E86-C  No. 8  pp. 1613-1620
Type of Manuscript:  Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology)
Category: 
Keyword: 
planar duplexer, tapped resonator, attenuation pole, bandpass filter, 
 Summary | Full Text:PDF
An Effective Method for Designing Bandpass Filters Using λ/4 Resonators for Improving Out-of-Band Characteristics
Kouji WADA Tomohide KAMIYAMA Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/02/01
Vol. E86-C  No. 2  pp. 150-161
Type of Manuscript:  Special Section PAPER (Special Issue on Circuit and Device Technology for High-Speed Wireless Communication)
Category: Passive (Filter)
Keyword: 
λ/4 resonator, attenuation pole, skirt characteristics, spurious responses, bandpass filter, 
 Summary | Full Text:PDF
An Empirical Study of a Coplanar Bandpass Filter with Attenuation Poles Using Short-Ended Half-Wavelength Resonators
Kouji WADA Yoshiyuki AIHARA Osamu HASHIMOTO Hiroshi HARADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/02/01
Vol. E86-A  No. 2  pp. 273-279
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
short-ended half-wavelength resonator, tap-coupling, attenuation pole, bandpass filter, coplanar waveguide (CPW), 
 Summary | Full Text:PDF
Design of Bandpass Filters with a Function to Control the Number of Attenuation Poles
Kouji WADA Yasuhisa YAMAMOTO Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/03/01
Vol. E85-C  No. 3  pp. 578-585
Type of Manuscript:  Special Section PAPER (Special Issue on Signals, Systems and Electronics Technology)
Category: Circuit
Keyword: 
attenuation pole, stub resonator, bandpass filter, tap-connection technique, 
 Summary | Full Text:PDF
Technique for Improving Out-of-Band Characteristics of Planar Microwave Filters Using Tapped Resonators
Kouji WADA Kouichi NAKAGAWA Osamu HASHIMOTO Hiroshi HARADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/02/01
Vol. E85-C  No. 2  pp. 391-399
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
tapped resonator, attenuation pole, spurious responses, planar microwave filter, 
 Summary | Full Text:PDF
Estimation of Complex Permittivity Using Rectangular Waveguide with Flange by FDTD Method
Kouji SHIBATA Osamu HASHIMOTO Kouji WADA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2001/07/01
Vol. E84-C  No. 7  pp. 977-980
Type of Manuscript:  Special Section LETTER (Special Issue on Techniques for Constructing Microwave Simulators--Design and Analysis Tools for Electromagnetic Fields, Circuits, and Antennas--)
Category: 
Keyword: 
rectangular waveguide with flange, non-destructive measurement, standing wave, complex permittivity, FDTD method, 
 Summary | Full Text:PDF
Fundamentals of Open-Ended Resonators and Their Application to Microwave Filters
Kouji WADA Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2000/11/25
Vol. E83-C  No. 11  pp. 1763-1775
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
open-ended resonator, tap feed, low spurious responses, transmission zero, dual-passband response, 
 Summary | Full Text:PDF
Weatherability of 60 GHz Wave Absorber Using Epoxy-Modified Urethane Rubber Mixed with Carbon Particles
Tetsu SOH Kouji WADA Osamu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2000/03/25
Vol. E83-C  No. 3  pp. 496-501
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
millimeter-wave absorber, epoxy-modified urethane rubber mixed with carbon particles, accelerated artificial exposure test, weatherability, temperature characteristics, 
 Summary | Full Text:PDF
Design of a Bandpass Filter with Multiple Attenuation Poles Based on Tapped Resonators
Kouji WADA Ikuo AWAI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/07/25
Vol. E82-C  No. 7  pp. 1116-1122
Type of Manuscript:  Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology)
Category: Passive Devices and Circuits
Keyword: 
multiple attenuation poles, half-wavelength resonator, tap-coupling, bandpass filter, filter design, 
 Summary | Full Text:PDF
Characteristics of Short-Ended Coplanar Waveguide Resonator with Low Spurious Response and Its Application to a Bandpass Filter
Kouji WADA Yasuo IWAMOTO Ikuo AWAI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/01/25
Vol. E82-C  No. 1  pp. 126-132
Type of Manuscript:  PAPER
Category: Microwave and Millimeter Wave Technology
Keyword: 
coplanar waveguide, short-ended resonator, bandpass filter, low spurious response, 
 Summary | Full Text:PDF
Basic Characteristics of a Quarter-Wavelength CPW Resonator with Tap-Feed Structure and Its Application to a Bandpass Filter with Attenuation Poles
Kouji WADA Ikuo AWAI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1998/06/25
Vol. E81-C  No. 6  pp. 924-933
Type of Manuscript:  Special Section PAPER (Special Issue on Microwave and Millimeter-Wave Module Technology)
Category: Passive Element
Keyword: 
coplanar waveguide, quarter-wavelength resonator, tap-feed, combline filter, 
 Summary | Full Text:PDF