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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 #
EMT, IEE-EMT 2022-06-23
10:30
Tokyo The Institute of Electrical Engineers of Japan 1-D Circular Near Field to Far Field Radar Cross Section Transformation by Using a Weight Function Based on Cylindrical Wave Expansion
Yoshihiko Akamine, Takashi Tomura, Joro Hirokawa (Titech) EMT2022-2
 [more] EMT2022-2
pp.7-12
AP, WPT
(Joint)
2022-01-21
12:40
Tottori Kenmin-Fureai-Kaikan
(Primary: On-site, Secondary: Online)
Design of a Circularly-polarized Crossed-slot Square-Arrangement Array Antennas on Alternating-phase Feed Parallel-plate Waveguide
Yuta Ishikawa, Takashi Tomura, Jiro Hirokawa (Tokyo Tech) AP2021-149
When adjacent rectangular waveguides are alternating-phase fed, the field distribution is maintained even though the str... [more] AP2021-149
pp.80-85
AP, WPT
(Joint)
2022-01-21
13:05
Tottori Kenmin-Fureai-Kaikan
(Primary: On-site, Secondary: Online)
Analysis and design of a circularly-polarized element on a parallel plate waveguide with perpendicular corporate-feed
Hiroki Nishimoto, Takashi Tomura, Jiro Hirokawa (Tokyo Tech) AP2021-150
In a conventional corporate-feed waveguide circularly polarized slot array antenna, plural thin metal plates are stacked... [more] AP2021-150
pp.86-91
MWP 2021-11-26
17:25
Online Online 60-GHz-band Spatial Duplex Radio over Fiber by Rectangular-Coordinate Two-Dimensional Orthogonal Multiplexing
Takashi Tomura, Jiro Hirokawa (Tokyo Tech), Muhsin Ali, Guillermo Carpintero (UC3M) MWP2021-36
In this paper, we demonstrate rectangular-coordinate two-dimensional orthogonal multiplexing (ROM) using a 60-GHz wavegu... [more] MWP2021-36
pp.32-36
AP 2021-10-07
13:00
Online Online [Poster Presentation] Study of Square Region Irradiation Waveguide Slot Array Antenna
Yuto Katsura, Takashi Tomura, Jiro Hirokawa (Tokyo Tech) AP2021-75
A uniformly-excited 8×2-element post-wall waveguide slot array antenna consists of a feed waveguide, slots on a radiatin... [more] AP2021-75
pp.33-36
AP 2021-10-07
14:25
Online Online [Poster Presentation] Study of mode converters for feeding an omnidirectional antenna in 300GHz-band
Riki Yanagisawa, Takashi Tomura, Jiro Hirokawa (Tokyo Tech) AP2021-88
An omnidirectional antenna is required for the measurement of radio propagation characteristics in the terahertz band. T... [more] AP2021-88
pp.74-77
AP 2021-10-07
14:25
Online Online [Poster Presentation] A Study of Deformation Compensation for Deployment of a Foldable and Storable Reflectarray Antenna
Yuki Takeda, Takashi Tomura, Hiraku Sakamoto (Tokyo Tech) AP2021-89
Satellite onboard antennas are stored on the ground and deployed in orbit due to the volume limitation at launch. Conven... [more] AP2021-89
pp.78-81
AP 2021-10-07
14:25
Online Online [Poster Presentation] A Study on Antenna Efficiency and Bandwidth of Terahertz Band Partially Parallel-Fed Waveguide Slot Arrays
Yoshiki Hara, Jiro Hirokawa, Takashi Tomura (Tokyo Tech) AP2021-90
In the corporate feed of a waveguide slot array antenna, each element is fed with an equal-length line, which increases ... [more] AP2021-90
pp.82-88
AP 2021-04-16
10:45
Hyogo Kinosaki International Arts Center
(Primary: On-site, Secondary: Online)
Development of deployable CFRP slot array antenna for small SAR satellite
Hirobumi Saito, Kosei Ishimura (Waseda Univ.), Takashi Tomura, Takashi Tomura (Tokyo Tech) AP2021-1
 [more] AP2021-1
pp.1-5
MW, AP
(Joint)
2020-09-24
12:50
Online Online [Poster Presentation] Bandwidth Enhancement of Waveguide Coupler by Changing the Cross-Section of the Coupling Region in the Axial Direction
Shota Yamakawa, Takashi Tomura, Jiro Hirokawa (Tokyo tech) AP2020-43
We have a problem of narrow bandwidth in the waveguide two-plane coupler. The two-plane coupler integrates the functions... [more] AP2020-43
pp.57-61
MW, AP
(Joint)
2020-09-24
13:50
Online Online [Poster Presentation] Excitation by Metal Posts of a Square Arrangement of Slot Antennas in Alternating-Phase Feed Parallel-Plate Waveguide
Yuta Ishikawa, Takashi Tomura, Jiro Hirokawa (Tokyo Tech) AP2020-44
A series-fed waveguide slot array antenna with an alternating-phase feed can be considered as a parallel plate waveguide... [more] AP2020-44
pp.62-65
MW, AP
(Joint)
2020-09-24
13:50
Online Online [Poster Presentation] Control of the reception level using the millimeter-wave band waveguide slot array installed on the side in the touchless ticket gate
Mizuki Kurose, Takashi Tomura, Jiro Hirokawa (Tokyo Tech) AP2020-45
One of the touchless ticket gates is a system in which an antenna on the ceiling of the ticket gate radiates a millimete... [more] AP2020-45
pp.66-70
MW, AP
(Joint)
2020-09-24
13:50
Online Online [Poster Presentation] A Study of a Multi-layer Circularly Polarized Element for a Waveguide Corporate-feed Array
Hiroki Nishimoto, Takashi Tomura, Jiro Hirokawa (Tokyo Tech) AP2020-48
A 60-GHz band corporate-feed waveguide slot array has been fabricated by diffusion bonding of laminated thin metal plate... [more] AP2020-48
pp.75-78
MWP 2020-05-28
15:55
Online Online Transmission control of 120-GHz-band SRR bandstop filter
Akihiko Hirata, Koichiro Itakura (CIT), Takashi Tomura, Jiro Hirokawa (TITECH), Issei Watanabe, Norihiko Sekine, Akifumi Kasamatsu (NICT) MWP2020-5
 [more] MWP2020-5
pp.23-26
AP 2020-03-26
14:30
Fukui Fukui College
(Cancelled but technical report was issued)
Experimental evaluation in outdoor environment at 66 GHz band by LoS-MIMO configuration independent transmit distance
Kentaro Nishimori, Naoki Matsumura, Ryotaro Taniguchi (Niigata Univ.), Takefumi Hiraguri (NIT), Takashi Tomura, Jiro Hirokawa (TIT) AP2019-200
 [more] AP2019-200
pp.17-22
WPT 2020-03-06
15:30
Kyoto
(Cancelled but technical report was issued)
Measurement of SAR Antenna For Small Satellite At METLAB Part4
Budhaditya Pyne, Naoto Onodera (Synspective), Hirobumi Saito (Waseda University), Jiro Hirokawa, Takashi Tomura (TIT), Koji Tanaka (JAXA) WPT2019-68
 [more] WPT2019-68
pp.53-59
RCS, SR, SRW
(Joint)
2020-03-06
10:50
Tokyo Tokyo Institute of Technology
(Cancelled but technical report was issued)
Proposal on 4 by 4 LoS-MIMO at 66 GHz band for the implementation of Drone
Kentaro Nishimori, Naoki Matsumura, Yuki Yaku, Ryotaro Taniguchi (Niigata Univ.), Takefumi Hiraguri (NIT), Takashi Tomura, Jiro Hirokawa (TIT) RCS2019-377
 [more] RCS2019-377
pp.291-296
AP, WPT
(Joint)
2020-01-23
10:25
Kagawa Sunport Hall Takamatsu Design and miniaturization of Ψ-Shaped Patch Antenna on spherical surface
Soichi Sakurai, Kohei Jitosho, Wataru Kuramoto, Shihao Chen, Takashi Tomura, Jiro Hirokawa (Tokyo Tech.) AP2019-153
In this study, a patch antenna that can obtain a relatively large gain with a single element in the front direction is a... [more] AP2019-153
pp.23-26
AP, RCS
(Joint)
2019-11-20
13:35
Saga Saga Univ. Reflection Suppression of a Waveguide 2-plane Coupler considering the Two-Dimensional Structural Symmetry
Yuki Sunaguchi, Takashi Tomura, Jiro Hirokawa (Tokyo Tech) AP2019-111
A waveguide 2-plane coupler combining waveguide H-plane and E-plane couplers functionally into one body has been propose... [more] AP2019-111
pp.31-34
AP, RCS
(Joint)
2019-11-20
14:15
Saga Saga Univ. Analysis for Gap Waveguide Considering Structural Periodicity and Design of Mode Converter
Keisuke Ejiri, Takashi Tomura, Jiro Hirokawa (Tokyo Tech) AP2019-112
Gap waveguide consists of parallel metal plates and waffle iron structure, which has electromagnetic bandgap. The waffle... [more] AP2019-112
pp.35-40
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