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 Results 1 - 20 of 21  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
MW 2019-11-15
Okinawa Minami Daido Villa. Tamokuteki Koryu Center Design of Compact Uniplanar Rat-Race Circuit with Broadband Characteristics at 2.45GHz
Ryosuke Nakai, Kensuke Nagano, Yuya Haoka, Tadashi Kawai, Akira Enokihara (Univ. of Hyogo) MW2019-115
Rat-race circuits (RRCs) are used as important circuit elements that play combining/dividing of microwave signals. The R... [more] MW2019-115
- 2019-06-28
Overseas RUS, Bangkok, Thailand Low Cost and Alterable Planar Filters on Fabricated with Additive Manufacturing 3D Printing Technology
Kamonpan Kaewheang, Chonnipa Thanomdumrongsak, Amornsak Rattanawongsawat, Sarawuth Chaimool (KKU)
With current development in three dimensional (3D) printing technology the additive manufacturing techniques are getting... [more]
MW 2018-12-14
Kanagawa Kanagawa Univ. Design of Broadband Branch-Line Coupler with Loose Coupling Utilizing Coupled-Transmission Lines at Ka-Band
Yuya Haoka, Tadashi Kawai, Akira Enokihara (Univ. of Hyogo) MW2018-129
This paper describes broadband branch-line couplers (BLCs) with arbitrary power split ratios at Ka-band. The coupler has... [more] MW2018-129
AP 2015-10-22
Yamaguchi Yamaguchi Pref. Roufukukyo-kaikan Loss characteristic of transmission line employing periodically arrayed diodes.
Jang-Hyeon Jeong, Jeong-Hoon Kim, Soo-Jeong Kim, Young Yun (Korea Maritime and Ocean Univ.) AP2015-98
In this work, for application to miniaturization of RF passive components on MMIC(Monolithic Microwave Integrated Circui... [more] AP2015-98
MW 2014-03-04
Ehime Ehime University Design of Broadband Branch-Line Hybrid with Loose Coupling Utilizing Open-/Short-Circuited Coupled Transmission Lines
Nobuo Nakajima, Tadashi Kawai, Akira Enokihara, Isao Ohta (Univ. of Hyogo), Kei Satoh, Yasunori Suzuki, Hiroshi Okazaki, Shoichi Narahashi (NTT DOCOMO) MW2013-201
This paper describes broadband branch-line hybrids with loose coupling factors utilizing open-/short-circuited coupled t... [more] MW2013-201
MW 2012-12-13
Yamanashi Univ. of Yamanashi Parallel-Ring-Type Rat-Race Circuit for Loose Coupling Utilizing Composite Right/Left-Handed Transmission Lines
Yuma Simitomo, Tadashi Kawai, Akira Enokihara, Isao Ohta (Univ. of Hyogo), Kei Satoh, Yasunori Suzuki, Hiroshi Okazaki, Shoichi Narahashi (NTT DOCOMO) MW2012-132
This paper treats a parallel-ring-type rat-race circuit for loose coupling utilizing composite right-/left-handed transm... [more] MW2012-132
MW 2012-10-18
Tochigi Utsunomiya Univ. A Broadband Branch-Line Coupler Using Short-Circuited Slotline Stubs on Ground Plane
Nobuo Nakajima, Tadashi Kawai, Isao Ohta, Akira Enokihara (Univ. of Hyogo) MW2012-90
A branch-line hybrid plays an important role in microwave and millimeter-wave circuit system. However, its operation ban... [more] MW2012-90
Kyoto Kyoto Univ. An Experimental and Theoretical Investigation on Basic Characteristics of Transmission Line Employing 3D Capacitive Coupling Structure
Eui-Hoon Jang, Jang-Hyeon Jeong, Sung-Jo Han, Ki-Jun Son, Young Yun (Korea Maritime Univ.) MW2012-14
In this study, a short-wavelength transmission line employing comb-type capacitive transmission line (CCTL) was studied ... [more] MW2012-14
MW 2011-12-16
Yamaguchi Yamaguchi University Honeycomb Substrate Integrated Waveguide (HCSIW) and Its Applications for Design of SIW Components
Hiroaki Ikeuchi, Isao Ohta (Univ. of Hyogo), Mitsuyoshi Kishihara (Okayama Prefectural Univ.), Tadashi Kawai (Univ. of Hyogo) MW2011-137
This paper treats a new substrate integrated waveguide composed of a honeycomb substrate having a number of small holes ... [more] MW2011-137
Osaka Osaka Univ. Design Method of Compact Dual-Band Rat-Race Hybrid Utilizing Composite Right/Left-Handed Transmission Lines
Tadashi Kawai, Yoshihiro Tanabe, Akira Enokihara, Isao Ohta (Univ. of Hyogo) MW2011-84
This paper proposes a compact dual-band rat-race hybrid composed of composite right/left-handed transmission lines (CRLH... [more] MW2011-84
MW 2010-11-25
Okinawa Tiruru Band-Broadening Design Method of Branch-Line Coupler Utilizing Coupled-Transmission Lines
Hiroki Taniguchi, Tadashi Kawai, Isao Ohta, Akira Enokihara (Univ. of Hyogo) MW2010-109
In this paper we treat band-broadening design method of branch-line coupler utilizing external matching networks compose... [more] MW2010-109
MW 2010-06-24
Shizuoka Shizuoka Univ. [Special Talk] IEEE MTT-S Nagoya Chapter Launches -- Wave from the Midland Japan --
Takashi Ohira (Toyohashi Univ. of Tech.), Kenji Itoh (Kanazawa Inst. of Tech.), Ryosuke Ito (Autoliv Corp.), Tatsuo Nozokido (Univ. of Toyama.), Masahiro Hanazawa (Toyota Central R&D Labs) MW2010-36
IEEE Microwave Theory and Techniques Society and IEEE Nagoya Section created a brand new community MTT-S Nagoya Chapter ... [more] MW2010-36
MW 2010-05-14
Hyogo University of Hyogo Microstrip Broadband Branch-Line Coupler Utilizing Open-Circuited Series Stubs
Hiroki Taniguchi, Tadashi Kawai, Isao Ohta, Akira Enokihara (Univ. of Hyogo) MW2010-20
This paper treats broadband branch-line coupler with arbitrary power split ratios utilizing microstrip series stubs whic... [more] MW2010-20
MW 2010-05-14
Hyogo University of Hyogo Design Method of Lumped-Element Dual-Bnad Wilkinson Power Dividers
Hiroyuki Mizuno, Tadashi Kawai, Isao Ohta, Akira Enokihara (Univ. of Hyogo) MW2010-21
This paper treats a design method of dual-band lumped-element Wilkinson power dividers using series and parallel LC-reso... [more] MW2010-21
MW 2009-11-20
Kagoshima Tanegashima Broadband Compact Rat-Race Circuits Using Composite Right-/Left-Handed Transmission Lines
Tadashi Kawai, Hiroyuki Mizuno, Isao Ohta, Akira Enokihara (Univ. of Hyogo) MW2009-142
This paper treats a design method of broadband compact 180-degree hybrids using composite right-/left-handed transmissio... [more] MW2009-142
MW 2007-06-22
Aichi   Component Design of Layer Structured Millimeter-wave Passive Imaging Module
Masashi Ikeda, Takahiro Suzuki, Kunio Sakakibara (NIT), Yutaka Aoki (DENSO), Nobuyoshi Kikuma, Hiroshi Hirayama (NIT) MW2007-34
Simple configuration and broadband characteristic are required for RF
module in passive millimeter-wave imaging. We h... [more]
MW 2007-05-21
Hyogo University of Hyogo Tri-Band/Broadband Matching Techniques for 3-dB Branch-Line Couplers
Sadami Tanigawa (Univ. of Hyogo), Kunihiko Hayashi (Hanshin Electric), Takao Fujii, Isao Ohta, Tadashi Kawai (Univ. of Hyogo) MW2007-12
This paper presents design methods of 3-dB branch-line couplers operating at two arbitrary frequencies and the centre of... [more] MW2007-12
MW 2007-05-21
Hyogo University of Hyogo A Design Method of Lumped-Element Wilkinson Power Dividers Using LC-Ladder Circuits
Tadashi Kawai, Yasuaki Nakashima, Yoshihiro Kokubo, Isao Ohta (Univ. of Hyogo) MW2007-13
This paper treats a novel lumped-element Wilkinson power divider using LC-ladder circuis. The proposed circuit consists ... [more] MW2007-13
EMCJ, MW 2006-10-27
Aomori Hachinohe Institute of Technology H-Plane Waveguide Eight-Port Hybrid and Its Application to Directional Coupler with Variable Coupling Factor
Katsunori Toda, Isao Ohta (Univ. Hyogo), Mitsuyoshi Kishihara (Okayama Pref. Univ.) EMCJ2006-66 MW2006-122
This paper suggests an eight-port hybrid consisting of four cruciform H-plane 3-dB hybrids connected with each other and... [more] EMCJ2006-66 MW2006-122
MW 2006-09-05
Tokyo   High-Directivity λ/4 Microstrip Couplers with a Periodic Structure on Coupled Edges
Takao Fujii, Isao Ohta, Yoshihiro Kokubo (Univ. of Hyogo)
A /4 microstrip coupled-line coupler suffers from the deterioration of directivity because of the phase velocity... [more] MW2006-92
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