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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 43  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
AP 2024-03-14
11:00
Fukui UNIVERSITY OF FUKUI
(Primary: On-site, Secondary: Online)
[Tutorial Lecture] Short-range radio propagation characteristics evaluation technology in the 300-GHz band
Akihiko Hirata (CIT) AP2023-203
Research and development of terahertz wireless communication using from 0.1 THz to 10 THz radio waves is underway as a m... [more] AP2023-203
pp.11-16
AP, RCS
(Joint)
2023-11-17
13:00
Kumamoto Kumamoto Prefectural Workers' Welfare Hall
(Primary: On-site, Secondary: Online)
[Invited Lecture] Relationship between size and reflected power of metal flat reflectors for indoor communications in the 300 GHz band
Makoto Ohashi, Keizo Cho, Akihiko Hirata (CIT) AP2023-150 RCS2023-173
Large-capacity and ultrahigh-speed communications using millimeter wave and terahertz wave bands are attracting attentio... [more] AP2023-150 RCS2023-173
pp.104-109(AP), pp.107-112(RCS)
MW, AP
(Joint)
2023-09-29
09:40
Kochi Kochi Castle Museum of History
(Primary: On-site, Secondary: Online)
Measurement of Reflection Characteristics of 300 GHz Sub-THz Wave Considering Polarization in Indoor Environment
Keizo Cho, Makoto Ohashi, Yuma Tanaka, Akihiko Hirata (Chiba Inst. of Tech) AP2023-82
 [more] AP2023-82
pp.22-26
EST, MW, EMT, OPE, MWPTHz, IEE-EMT [detail] 2023-07-20
10:35
Hokkaido Muroran Institute of Technology
(Primary: On-site, Secondary: Online)
MIMO Communication for Pipe Inspection Robot Using Microwave Propagating along PVC Pipe Wall
Masafumi Suzuki, Akihiko Hirata (CIT), Hiroshi Murata (Mie Univ.), Masato Mizukami (Muroran IT) EMT2023-25 MW2023-43 OPE2023-25 EST2023-25 MWPTHz2023-21
Recently, inspection by robots has been attracting attention as an efficient inspection method for buried pipes such as ... [more] EMT2023-25 MW2023-43 OPE2023-25 EST2023-25 MWPTHz2023-21
pp.88-93
EST, MW, EMT, OPE, MWPTHz, IEE-EMT [detail] 2023-07-21
09:35
Hokkaido Muroran Institute of Technology
(Primary: On-site, Secondary: Online)
120-GHz-band Close Proximity Wireless Communication Using Dielectric Substrate
Tomohiro Kumaki, Akihiko Hirata (CIT), Osamu Kagaya (AGC) EMT2023-37 MW2023-55 OPE2023-37 EST2023-37 MWPTHz2023-33
This study examines 120-GHz-band ultrahigh-speed sheet LAN communications that enable stable network connections simply ... [more] EMT2023-37 MW2023-55 OPE2023-37 EST2023-37 MWPTHz2023-33
pp.147-150
EST, MW, EMT, OPE, MWPTHz, IEE-EMT [detail] 2023-07-21
13:00
Hokkaido Muroran Institute of Technology
(Primary: On-site, Secondary: Online)
Evaluation of Availability of 300-GHz-Band Wireless Fronthaul deployed by tree topology during Torrential Rain
Shiichiro Furukawa, Akihiko Hirata (CIT) EMT2023-42 MW2023-60 OPE2023-42 EST2023-42 MWPTHz2023-38
In this study, we investigated the availability of 300-GHz-band fronthaul during torrential rain by simulation. We divid... [more] EMT2023-42 MW2023-60 OPE2023-42 EST2023-42 MWPTHz2023-38
pp.169-172
AP 2023-03-16
14:10
Toyama Toyama Prefectural Civic Hall
(Primary: On-site, Secondary: Online)
A Study of Multipath Angular Characteristics near Human Body in 300 GHz Band
Koya Imaseki, Yuito Usui, Hiroaki Nakabayashi, Akihiko Hirata (Chiba Inst. of Tech.) AP2022-237
In recent years, the application of radio over terahertz technology, which relays millimeter-wave communications in a te... [more] AP2022-237
pp.19-24
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)
Transmission of 120GHz-band RF Signal by Contacting Another Dielectric Sheet
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
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