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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 36  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
EMD, R, LQE, OPE, CPM 2022-08-25
15:35
Chiba  
(Primary: On-site, Secondary: Online)
A communication method between the compact pipe travelling robot using microwave guided-modes propagating along a pipe-Wall
Masato Mizukami (Muroran Inst. Tech.), Hiroshi Murata (Mie Univ.), Akihiko Hirata (Chiba Inst. Tech.) R2022-20 EMD2022-8 CPM2022-25 OPE2022-51 LQE2022-14
In recent years, infrastructure facilities have been noticeably deteriorating and need to be inspected effectively. Many... [more] R2022-20 EMD2022-8 CPM2022-25 OPE2022-51 LQE2022-14
pp.21-26
MWPTHz, EST, MW, EMT, OPE, IEE-EMT [detail] 2022-07-19
16:35
Hokkaido Asahikawa Civic Culture Hall
(Primary: On-site, Secondary: Online)
120-GHz-band transmission by contacting dielectric waveguides
Akihiko Hirata, Masaki Ushio (CIT), Issei Watanabe, Norihiko Sekine, Akifumi Kasamatsu (NICT) EMT2022-30 MW2022-54 OPE2022-33 EST2022-31 MWPTHz2022-28
Currently, sheet LAN, which enables LAN connection simply by placing a terminal on a dielectric sheet that transmits ter... [more] EMT2022-30 MW2022-54 OPE2022-33 EST2022-31 MWPTHz2022-28
pp.109-112
SRW 2022-06-20
15:30
Tokyo Kikai-Shinko-Kaikan Bldg.
(Primary: On-site, Secondary: Online)
[Invited Talk] Study of Propagation Characteristics of Radio Waves for Use Cases in 300 GHz Band Wireless Link
Akihiko Hirata (CIT) SRW2022-7
In Beyond 5G, the next generation of mobile communications, the use of 300 GHz band wireless links, which can achieve da... [more] SRW2022-7
pp.20-24
AP, SANE, SAT
(Joint)
2021-07-30
14:05
Online Online [Invited Lecture] Propagation study of 300 GHz band front hall wireless link for Beyond 5G
AKihiko Hirata (CIT), Katsumi Fujii, Issei Watanabe, Norihiko Sekine, Akifumi Kasamatsu (NICT) AP2021-44
Recently, research and development of Beyond 5G mobile network systems has been activated. In Beyond 5G mobile network s... [more] AP2021-44
pp.115-119
OPE, MW, IEE-EMT, MWP, EST, EMT, THz [detail] 2021-07-15
16:00
Online Online Dependence of Alignment on the transmission control of 120-GHz-band SRR bandstop filter by contacting Lattice Pattern
Akihiko Hirata (CIT), Issei Wanatabe, Norihiko Sekine, Akifumi Kasamatsu (NICT) EMT2021-16 MW2021-21 OPE2021-10 EST2021-17 MWP2021-18
Terahertz (THz)-band close-proximity wireless link can achieve instantaneous transfer of large amounts of data, however,... [more] EMT2021-16 MW2021-21 OPE2021-10 EST2021-17 MWP2021-18
pp.50-53
MWP 2021-05-26
15:10
Online Online Complex dielectric constant measurement of glass at 200-500 GHz by THz-TDS and VNA
Akihiko Hirata, Koji Suizu (CIT), Issei Watanabe, Norihiko Sekine, Akifumi Kasamatsu (NICT) MWP2021-3
(To be available after the conference date) [more] MWP2021-3
pp.10-13
SRW 2020-08-25
13:50
Online Online [Invited Talk] Evaluation of Antenna and Propagation Models for beyond 5G System
Akihiko Hirata (CIT), Shintaro Hisatake (Gifu Univ.), Tetsuya Kawanishi (Waseda Univ.) SRW2020-23
 [more] SRW2020-23
pp.67-70
EMT, MW, OPE, EST, MWP, THz, IEE-EMT [detail] 2020-07-17
13:50
Online Online Improvement of Detection in Concrete Surface Cracks Covered with Paper by Using 77-GHz-Band Millimeter-Wave
Akihiko Hirata, Makoto Nakasizuka, Koji Suizu (CIT), Yoshikazu Sudo (Ais Eng.) EMT2020-23 MW2020-32 OPE2020-18 EST2020-23 MWP2020-23
 [more] EMT2020-23 MW2020-32 OPE2020-18 EST2020-23 MWP2020-23
pp.95-100
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
MWP 2019-11-27
13:55
Tokyo Kikai-Shinko-Kaikan Bldg. Measurement of 4 x 4 planar slot array antenna near-field pattern
Akihiko Hirata (CIT), Yusuke Tanaka, Shintaro Hisatake (Gifu Univ.), Jiro Hirokawa (TITEC), Issei Watanabe, Norihiko Sekine, Akifumi Kasamatsu (NICT) MWP2019-43
 [more] MWP2019-43
pp.5-8
AP, RCS
(Joint)
2019-11-20
14:40
Saga Saga Univ. Mutual Coupling Suppression and Improvement of the Near-Field Transmission by using a Substrate Layer in a Corporate-feed Waveguide Slot Array Antenna
Kentaro Wada, Takashi Tomura, Jiro Hirokawa (Tokyo Tech.), Akihiko Hirata (CIT) AP2019-113
 [more] AP2019-113
pp.41-45
MWP 2018-11-26
14:50
Tokyo Kikai-Shinko-Kaikan Bldg. Proximity wireless data transmission characteristics using planar slot array antenna
Akihiko Hirata (CIT), Jiro Hirokawa (Tokyo Tech), Masato Sonoda, Taiki Higashimoto, Tsubasa Kurokwa, Tadao Nagatsuma (Osaka Univ.) MWP2018-45
 [more] MWP2018-45
pp.9-12
MW 2016-01-14
16:00
Tokyo Kikai-Shinko-Kaikan Bldg. Beam steering of 120-GHz-band planar slot array antenna
Akihiko Hirata, Jun Takeuchi (NTT), Jiro Hirokawa (Tokyo Tech.) MW2015-164
In this report, we report on the examination results of the beam scanning using the 120-GHz-band planar slot array anten... [more] MW2015-164
pp.27-30
MWP 2015-11-27
16:35
Tokyo Kikai-Shinko-Kaikan Bldg. Effects of antenna near field pattern on the transmission characetristics of close-proximity 120-GHz-band wireless system
Akihiko Hirata, Jun Takeuchi (NTT) MWP2015-59
 [more] MWP2015-59
pp.35-39
EMT, MW, OPE, MWP, EST, IEE-EMT [detail] 2015-07-16
09:45
Hokkaido Kushiro City Lifelong Learning Center Study on 120-GHz-band low-power wireless equipment using photonic technologies
Akihiko Hirata, Jun Takeuchi (NTT) EMT2015-8 MW2015-46 OPE2015-20 EST2015-12 MWP2015-11
 [more] EMT2015-8 MW2015-46 OPE2015-20 EST2015-12 MWP2015-11
pp.1-4
EST, OPE, LQE, EMT, PN, MWP, IEE-EMT [detail] 2015-01-30
15:30
Osaka   Terahertz imaging at 600 GHz using high speed scanners
Kodai Takata, Hiroki Nishii (Osaka Univ.), Akihiko Hirata, Katsuhiro Ajito (NTT), Tadao Nagatsuma (Osaka Univ.) PN2014-60 OPE2014-185 LQE2014-172 EST2014-114 MWP2014-82
In order to realize practical non-destructive and non-contact inspection of objects by using terahertz (THz) waves, we p... [more] PN2014-60 OPE2014-185 LQE2014-172 EST2014-114 MWP2014-82
pp.217-222
MW, ED 2015-01-15
14:40
Tokyo Kikai-Shinko-Kaikan Bldg. Stabilization of the temperature characteristics of millimeter-wave modules for 120-GHz-band wireless link
Akihiko Hirata, Jun Takeuchi (NTT) ED2014-119 MW2014-183
 [more] ED2014-119 MW2014-183
pp.13-17
MW 2014-05-23
15:00
Kyoto Doshisha Univ. Design and Fabrication of a Dual-polarization Corporate-feed Waveguide 32x32-slot Array Antenna for 120 GHz Band
Keisuke Hashimoto (Tokyo Tech), Jun Takeuchi (NTT), Jiro Hirokawa (Tokyo Tech), Akihiko Hirata (NTT), Makoto Ando (Tokyo Tech) MW2014-38
In this paper, we design a dual-polarization corporate-feed plate-laminated waveguide 32x32-slot array antenna for 120 G... [more] MW2014-38
pp.85-90
MW 2014-03-04
16:40
Ehime Ehime University [Special Talk] Briefing Report on European Microwave Week 2013
Koji Tsutsumi (Mitsubishi Electric), Ryo Ishikawa (UEC), Hidenori Yukawa (Mitsubishi Electric), Tamio Kawaguchi (Toshiba), Akihiko Hirata (NTT), Hirokazu Kamoda (ATR) MW2013-209
 [more] MW2013-209
pp.71-78
ED, MW 2014-01-17
11:00
Tokyo Kikai-Shinko-Kaikan Bldg. A Linear Array of Transverse Slots without Cross-polarization on a Hollow Rectangular Waveguide in the 120-GHzBand
Duong Nhu Quyen, Makoto Sano, Jiro Hirokawa, Makoto Ando (Tokyo Inst. of Tech.), Jun Takeuchi, Akihiko Hirata (NTT) ED2013-126 MW2013-191
 [more] ED2013-126 MW2013-191
pp.91-96
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