Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
AP |
2022-10-19 12:20 |
Gifu |
GIFU CITY CULTURE CENTER (Primary: On-site, Secondary: Online) |
[Poster Presentation]
A study of a circularly arranged hollow-waveguide narrow-wall slot array antenna in 150 GHz band Rikako Yamaguchi, Jiro Hirokawa, Takashi Tomura (Tokyo Tech) AP2022-118 |
[more] |
AP2022-118 pp.101-104 |
AP |
2022-10-19 12:20 |
Gifu |
GIFU CITY CULTURE CENTER (Primary: On-site, Secondary: Online) |
[Poster Presentation]
Research of Millimeter-wave Band Waveguide Slot Array Antenna for Increasing Transmission Capacity in Two-dimensional Quadrature Multiplex Transmission in Rectangular Coordinate System Masashi Fujishiro, Jiro Hirokawa, Takashi Tomura (TokyoTech) AP2022-119 |
One type of MIMO is rectangular-coordinate two-dimensional multiplex transmission (ROM transmission). In this study, we ... [more] |
AP2022-119 pp.105-108 |
MIKA (3rd) |
2022-10-15 13:30 |
Niigata |
Niigata Citizens Plaza (Primary: On-site, Secondary: Online) |
[Invited Talk]
Numerical design of one-dimensional switching matrices with an arbitrary number of beams and application to millimeter-wave two-dimensional ones Jiro Hirokawa (Tokyo Institute of Technology) |
[more] |
|
AP, MW (Joint) |
2022-09-16 12:00 |
Ehime |
The Museum of Art, EHIME (Primary: On-site, Secondary: Online) |
Design of a 150GHz-Band Reflector OmnidirectionalAntenna Using a Circular TE11-TM01 Mode Converter Riki Yanagisawa, Jiro Hirokawa, Takashi Tomura (Tokyo Tech) AP2022-88 |
An omnidirectional antenna is required for the measurement of radio propagation characteristics in the terahertz band. I... [more] |
AP2022-88 pp.96-99 |
AP, MW (Joint) |
2022-09-16 16:40 |
Ehime |
The Museum of Art, EHIME (Primary: On-site, Secondary: Online) |
Design of Feed Circuit for Post-Wall Waveguide Slot Array Antenna Irradiating Square Region Yuto Katsura, Takashi Tomura, Jiro Hirokawa (Tokyo Tech) AP2022-92 |
We design a waveguide slot array antenna with a square irradiation area that enables communication to all four corners f... [more] |
AP2022-92 pp.115-118 |
AP, SANE, SAT (Joint) |
2022-07-27 16:30 |
Hokkaido |
Asahikawa Taisetsu Crystal Hall (Primary: On-site, Secondary: Online) |
SAR Observation with High Resolution, Wide Swath by Deployable Corporate-Fed Slot Array Antenna Kosei Ishimura (Waseda Univ./Tokyo Inst. Tech.), Kosei Ishimura (Waseda Univ.), Jiro Hirokawa (Tokyo Inst. Tech.) AP2022-38 SANE2022-23 SAT2022-19 |
We have developed a synthetic aperture radar system with 1m ground resolution compatible with 100kg small satellite. The... [more] |
AP2022-38 SANE2022-23 SAT2022-19 pp.22-27(AP), pp.6-11(SANE), pp.12-17(SAT) |
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 13:00 |
Online |
Online |
[Poster Presentation]
Design of a Circularly Polarized Slot Array on a Parallel-plate Waveguide using Non-inclined Slots Yuki Tomori, Tianyu Wang, Tomura Takashi, Jiro Hirokawa (Tokyo Tech) AP2021-76 |
A circularly polarized parallel-plate slot array antennas are expected to be applied in various fields due to their simp... [more] |
AP2021-76 pp.37-41 |
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 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 |
SANE |
2021-05-13 14:30 |
Online |
Online |
Synthetic Aperture Radar Compatible with 100kg Class Satellite and Its Demonstration in Orbit Hirobumi Saito (Waseda Univ.), Koji Tanaka, Makoto Mita (ISAS/JAXA), Prilando Rizki Akbar, Budhaditya Pyne, Masato Tanaka, Hiromi Watanabe, Naoto Onodera, Ichitaro Arisaka, Toshihiro Obata (Synspective), Kosei Ishimura (Waseda Univ.), Jiro Hirokawa (Tokyo Inst.Tech.) SANE2021-7 |
Institute of Space and Astronautical Science(ISAS,JAXA) has developed synthetic Aperture Radar (SAR) system that is comp... [more] |
SANE2021-7 pp.38-43 |
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 |