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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 57  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
MW 2022-03-03
09:15
Online Online Stripline-Type Cruciform Directional Couplers
Mitsuyoshi Kishihara (Okayama Pref. Univ.), Isao Ohta (Univ. of Hyogo) MW2021-111
Directional couplers of simple structure which consist of H-plane or E-plane waveguides crossing in cruciform and posses... [more] MW2021-111
pp.1-6
MW 2021-05-20
13:30
Online Online Trial Fabrication and Evaluation of PTFE Substrate Integrated Waveguide Butler Matrix for Short Millimeter-Wave
Mitsuyoshi Kishihara (Okayama Pref. Univ.), Kaito Fujitani, Akinobu Yamaguchi, Yuichi Utsumi, Isao Ohta (Univ. of Hyogo) MW2021-6
This paper attempts to fabricate and evaluate a 4×4 Butler matrix for short millimeter-wave, based on the fabrication pr... [more] MW2021-6
pp.5-10
MW 2018-05-25
09:00
Kyoto Doshisha Univ. Analysis of Discontinuity in Half-Mode Substrate Integrated Waveguide
Shogo Nakamura, Mitsuyoshi Kishihara, Kensuke Okubo, Hironori Takimoto (Okayama Pref. Univ.), Isao Ohta (Univ. of Hyogo) MW2018-11
The Half-mode-SIW has the advantage that the occupied area of the surface conductor or circuit can be halved. In this st... [more] MW2018-11
pp.7-11
MW 2017-05-18
14:50
Osaka Osaka Univ. (Seminar Room1, Osaka Univ. Kaikan) Design of 0-dB Forward Coupler Using Left-Handed Waveguide of Cutoff TM-mode
Seiichi Ohkubo, Mitsuyoshi Kishihara, Kensuke Okubo, Hironori Takimoto (Okayama Pref. Univ.), Isao Ohta (Univ. of Hyogo) MW2017-10
Because the TM-mode waveguide below the cutoff frequency shows negative permeability, a left-handed waveguide can be con... [more] MW2017-10
pp.13-17
MW, ICD 2017-03-02
09:00
Okayama Okayama Prefectural Univ. Fabrication of Integrated PTFE-Filled Waveguide Butler Matrix for Short Millimeter-Wave by SR Etching -- Construction Using Cruciform Couplers and Intersection Circuits --
Mitsuyoshi Kishihara (Okayama Pref. Univ.), Akinobu Yamaguchi, Yuichi Utsumi, Isao Ohta (Univ. of Hyogo) MW2016-188 ICD2016-118
This paper attempts to fabricate an integrated waveguide Butler matrix for short millimeter-wave using SR etching proces... [more] MW2016-188 ICD2016-118
pp.1-6
MW 2016-05-19
15:00
Kyoto Kyoto Univ. Improvement of Isolation Characteristics of Multi-Way Power Divider Using Mode Transducer
Keita Miki, Mitsuyoshi Kishihara, Kensuke Okubo, Hironori Takimoto (Okayama Pref. Univ.), Isao Ohta (Univ of Hyogo) MW2016-9
The TE10-TEp0 mode transducers consisting of a linearly arranged single-mode waveguide(SMWG) and an over-moded waveguide... [more] MW2016-9
pp.1-6
MW, OPE, EMT, MWP, EST, IEE-EMT [detail] 2014-07-17
11:15
Hokkaido Muroran Inst. of Tech. Design of Substrate Integrated Waveguide Multiple-Port Power Divider Using Cascade-Connected Cruciform Directional Couplers
Koji Takahashi, Tadashi Kawai (Univ. of Hyogo), Mitsuyoshi Kishihara (Okayama Pre. Univ.), Isao Ohta, Akira Enokihara (Univ. of Hyogo) MW2014-56 OPE2014-25 EST2014-17 MWP2014-14
 [more] MW2014-56 OPE2014-25 EST2014-17 MWP2014-14
pp.17-21
MW 2014-05-22
09:30
Kyoto Doshisha Univ. A Circuit Construction of Parallel Ring-Lines Type Rat-Race Circuit with Very Loose Coupling Utilizing Composite Right-/Left-Handed Transmission Lines
Yousuke Daimon, Tadashi Kawai, Akira Enokihara, Isao Ohta (Univ. of Hyogo), Kei Satoh, Yasunori Suzuki, Hiroshi Okazaki, Shoichi Narahashi (NTT DOCOMO) MW2014-25
 [more] MW2014-25
pp.7-12
MW 2014-05-22
14:30
Kyoto Doshisha Univ. Design of Left-Handed Rectangular Waveguide Using Cutoff TE- and TM-modes
Yuki Mizutani, Mitsuyoshi Kishihara (Okayama Pref. Univ.), Isao Ohta (Univ. of Hyogo), Kensuke Okubo, Hironori Takimoto (Okayama Pref. Univ.) MW2014-31
It has been proposed that a left-handed waveguide can be constructed using negative permittivity derived from the cut-of... [more] MW2014-31
pp.43-47
MW 2014-05-22
15:00
Kyoto Doshisha Univ. An Analysis of Phase Constant of Coupled-Trough-Waveguide Based on E-plane Planar Circuit Approach -- Application to 0-dB Forward Coupler Using Trough-Waveguide --
Yuya Namba, Mitsuyoshi Kishihara (Okayama Pref. Univ.), Isao Ohta (Univ. of Hyogo), Kensuke Okubo, Hironori Takimoto (Okayama Pref. Univ.) MW2014-32
In this paper, the trough-waveguide consisting of metallic plates is treated as a E-plane planar circuit that has discon... [more] MW2014-32
pp.49-53
MW 2014-03-04
11:50
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
pp.23-27
MW 2013-12-19
11:00
Saitama Saitama Univ. Design of Parallel Ring-Lines Type Rat-Race Circuit with Loose Coupling Utilizing Short-Circuited Coupled lines
Naoshi Yoshihashi, Tadashi Kawai, Isao Ohta, Akira Enokihara (Univ. of Hyogo) MW2013-154
This paper describes a rat-race hybrid with loose coupling using parallel ring-lines which compose of a quarter waveleng... [more] MW2013-154
pp.19-22
EST, MWP, OPE, MW, EMT, IEE-EMT [detail] 2013-07-18
11:25
Hokkaido Wakkanai Synthesis Cultural Center Trial Fabrication of 180 GHz-Band PTFE-Filled Waveguide by SR Etching and Its Evaluation
Mitsuyoshi Kishihara (Okayama Pref. Univ.), Hideki Kido, Akinobu Yamaguchi, Yuichi Utsumi, Isao Ohta (Univ. of Hyogo) MW2013-64 OPE2013-33 EST2013-28 MWP2013-23
This paper describes trial fabrication of a PTFE-filled waveguide for 180 GHz-band operation with the use of the SR (syn... [more] MW2013-64 OPE2013-33 EST2013-28 MWP2013-23
pp.103-108
EST, MWP, OPE, MW, EMT, IEE-EMT [detail] 2013-07-18
11:50
Hokkaido Wakkanai Synthesis Cultural Center Constitution of Left-handed Waveguide Based on Cutoff TM-mode -- Utilization of Circular TM01 mode and Rectangular TM11 mode --
Mitsuyoshi Kishihara (Okayama Pref. Univ.), Isao Ohta (Univ. of Hyogo) MW2013-65 OPE2013-34 EST2013-29 MWP2013-24
It has been reported that a left-handed waveguide can be constituted using cut-off TE10 mode of rectangular waveguide. B... [more] MW2013-65 OPE2013-34 EST2013-29 MWP2013-24
pp.109-114
MW 2013-06-28
13:15
Aichi Nagoya Institute of Tech. A Design of Directional Coupler Using Folded Left-Handed waveguide
Shuhei Takemoto, Mitsuyoshi Kishihara, Kensuke Okubo, Hironori Takimoto (Okayama Pref Univ.), Isao Ohta (Univ of Hyogo) MW2013-45
In this paper, a 0-dB directional coupler consisting of the folded left-handed waveguides with ridge-shaped stubs. First... [more] MW2013-45
pp.79-83
MW 2013-06-28
13:45
Aichi Nagoya Institute of Tech. In-line Type of H-Plane Waveguide TE10-TEp0 Mode Transducer and Its Application
Hiroaki Ikeuchi, Isao Ohta, Tadashi Kawai (Univ. of Hyogo), Mitsuyoshi Kishihara (Okayama Pref. Univ.) MW2013-46
This paper presents a design methodology of H-plane waveguide TE10-TEp0 mode transducers consisting of a single-mode wav... [more] MW2013-46
pp.85-90
MW, ED 2013-01-18
10:25
Tokyo Kikai-Shinko-Kaikan Bldg. A Study on 0-dB Coupler Using Half-mode Groove Waveguide for Wireless Power Transmission
Seiya Mori, Mitsuyoshi Kishihara, Kensuke Okubo, Hironori Takimoto (Okayama Prefectural Univ.), Isao Ohta (Univ. of Hyogo) ED2012-119 MW2012-149
This paper proposes a design of 0-dB forward coupler consisting of the half-mode groove waveguides and fabrication of 0-... [more] ED2012-119 MW2012-149
pp.39-44
MW 2012-12-13
16:15
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
pp.31-36
MW 2012-10-18
13:25
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
pp.53-57
MW 2012-10-18
14:05
Tochigi Utsunomiya Univ. H-Plane Waveguide Multiple Power Divider/Combiner of Chain Structure
Hiroaki Ikeuchi, Isao Ohta, Kuniyuki Omonishi, Tadashi Kawai (Univ. of Hyogo), Mitsuyoshi Kishihara (Okayama Prefectural Univ.) MW2012-92
This paper presents a design methodology of an H-plane waveguide N-way power divider/combiner constructed by serially co... [more] MW2012-92
pp.65-70
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