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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 65  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
AP 2022-10-19
09:30
Gifu GIFU CITY CULTURE CENTER
(Primary: On-site, Secondary: Online)
[Poster Presentation] Assignment of Adjacent Output Phase Differences Per Input Port in One-dimensional Parallel Switching Matrices
Shengjia Wu, Jiro Hirokawa, Takashi Tomura (Tokyo Tech.), Nelson J. G. Fonseca (ESA)
 [more]
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)
 [more]
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)
(To be available after the conference date) [more]
AP, MW
(Joint)
2022-09-14
10:35
Ehime The Museum of Art, EHIME
(Primary: On-site, Secondary: Online)
Reflection Phase Control by Varactor Diodes for Reflectarray Antennas on Flexible Substrate
Yuki Takeda, Takashi Tomura, Hiraku Sakamoto (Tokyo tech) AP2022-71
In this paper, control of reflection phase of the reflectarray antenna composed of a flexible substrate by varactor diod... [more] AP2022-71
pp.1-4
AP, MW
(Joint)
2022-09-14
12:25
Ehime The Museum of Art, EHIME
(Primary: On-site, Secondary: Online)
Design of a 350-GHz-band 16×16-element post-wall waveguide corporate-feed slot array antenna
Shohei Ogura, Takashi Tomura (Tokyo Tech), Lin Lin (Panasonic) AP2022-75
A 350-GHz 16 × 16-element post-wall waveguide parallel-fed slot array antenna is proposed, which can be fabricated on a ... [more] AP2022-75
pp.22-25
AP, MW
(Joint)
2022-09-16
12:00
Ehime The Museum of Art, EHIME
(Primary: On-site, Secondary: Online)
Design of 150-GHz-band Horizontal Plane Omnidirectional Reflector Antenna Using Circular TE11-TM01 Mode Converters
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
15:50
Ehime The Museum of Art, EHIME
(Primary: On-site, Secondary: Online)
Design of a Ka-band radial line slot antenna for isoflux radiation pattern
Gen Nakayama, Takashi Tomura (Titech) AP2022-90
 [more] AP2022-90
pp.106-109
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
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
This paper proposes a new near field to far field transformation method for radar cross section measure ments with a one... [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
 Results 1 - 20 of 65  /  [Next]  
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