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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 48  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
MWPTHz, EST, MW, EMT, OPE, IEE-EMT [detail] 2022-07-19
16:10
Hokkaido Asahikawa Civic Culture Hall
(Primary: On-site, Secondary: Online)
Simulation of terahertz wave scattering from slightly rough surface on woods and stones
Riku Yoshino, Toshiya Yoshida, Kunihisa Jitsuno (Waseda Univ.), Keizo Inagaki (NICT), Tetsuya Kawanishi (Waseda Univ.) EMT2022-29 MW2022-53 OPE2022-32 EST2022-30 MWPTHz2022-27
Millimeter and terahertz waves have been researched owing to apply next transmission system such as 6th generation. Howe... [more] EMT2022-29 MW2022-53 OPE2022-32 EST2022-30 MWPTHz2022-27
pp.103-108
RCS, SR, SRW
(Joint)
2022-03-03
09:55
Online Online A Consideration of Indoor Propagation Models in the 232-330 GHz Band
Hirokazu Sawada, Takeshi Matsumura, Keizo Inagaki, Atsushi Kanno, Katsumi Fujii, Jerdvisanop Chakarothai, Norihiko Sekine, Akifumi Kasamatsu, Hiroyo Ogawa (NICT) SRW2021-72
 [more] SRW2021-72
pp.17-20
PN, MWP, EMT, PEM, IEE-EMT [detail] 2022-01-27
10:35
Online Online Modeling and experimental study of W-band millimeter-wave scattering from slightly rough surfaces
Riku Yoshino, Tomohiko Kanaya, Shintaro Takada, Kunihisa Jitsuno (Waseda Univ), Keizo Inagaki (NICT), Tetsuya Kawanishi (Waseda Univ) PN2021-33 EMT2021-49 MWP2021-38
Recently, millimeter-wave and THz bands have been attracting attention as transmission media for high-speed wireless com... [more] PN2021-33 EMT2021-49 MWP2021-38
pp.7-10
PN, MWP, EMT, PEM, IEE-EMT [detail] 2022-01-27
11:00
Online Online A Study on Millimeter Wave Band Radar Characterization for Evaluation of Wideband Propagation Characteristics
Tomohiko Kanaya, Shintaro Takada, Riku Yoshino, Kunihisa Jitsuno (Waseda Univ.), Keizo Inagaki (NICT), Tetsuya Kawanishi (Waseda Univ.) PN2021-34 EMT2021-50 MWP2021-39
The use of millimeter waves and terahertz bands is expected in the development of wireless technology after 5G, and the ... [more] PN2021-34 EMT2021-50 MWP2021-39
pp.11-14
PN, MWP, EMT, PEM, IEE-EMT [detail] 2022-01-27
13:30
Online Online Experimental Study of In-Vehicle Secondary radar to detect pedestrians in NLOS
Satomi Masuda, Zhou Zhongqi, Maiko Kitamura, Mao Morishita, Kunihisa Jitsuno (Waseda Univ.), Keizo Inagaki, Atsushi Kanno (NICT), Tetsuya Kawanishi (Waseda Univ.) PN2021-36 EMT2021-52 MWP2021-41
It's not easy to detect in areas where there are many obstacles to the signals, such as NLOS.
In this study, we invest... [more]
PN2021-36 EMT2021-52 MWP2021-41
pp.19-22
MWP 2021-05-26
15:35
Online Online Examination of MMF transmission characteristics by changing the excitation state of the optical signal and the PD diameter in the SHF band
Yuki Shimamura (Waseda Univ.), Hiroki Yasuda (Waseda Univ./YAZAKI Corp.), Ryouga Kawabata (Waseda Univ.), Takamitu Aiba (YAZAKI Corp.), Keizo Inagaki (NICT), Tetuya Kawasnishi (Waseda Univ.) MWP2021-4
 [more] MWP2021-4
pp.14-18
MWP 2021-05-26
17:00
Online Online Study on multimode-fiber transmission capacity expansion based on precise measurement of time-domain variation of frequency response
Takuya Koyama, Ryoga Kawabata, Shota Nakamaru, Zu-Kai Weng (Waseda Univ.), Keizo Inagaki (NICT), Kunihisa Jitsuno, Tetsuya Kawanishi (Waseda Univ.) MWP2021-6
With the advent of the IoT society, the demand for low-cost moderate transmission capacity fiber optic communication is ... [more] MWP2021-6
pp.23-28
MWP 2021-05-26
17:25
Online Online Measurement of frequency characteristic in photodetectors using two-tone signals and estimation of non-linearity in photodetectors for wide-band signals
Yuta Maeda, Nonoka Maniwa, Yuki Seto, Ryoga Kawabata (Waseda Univ.), Keizo Inagaki (NICT), Tetsuya Kawanishi (Waseda Univ.) MWP2021-7
In wideband radio systems, radio-over-fiber would play important roles in simplification of the system. In a fiber wirel... [more] MWP2021-7
pp.29-33
MWP 2021-05-26
17:50
Online Online Interference suppression simulation by two-tone FMCW signals in 90GHz band linear cell radar
Kazunori Okuda, Tomohiko Kanaya, Satomi Masuda (Waseda Univ.), Keizo Inagaki (NICT/Waseda Univ.), Tetsuya Kawanishi (Waseda Univ./NICT) MWP2021-8
There is an increasing demand for automation and precision in radars that detect foreign of debris on the runway. In thi... [more] MWP2021-8
pp.34-38
AP
(2nd)
2020-12-10
13:20
Okinawa Nobumoto Ohama Memorial Hall
(Primary: On-site, Secondary: Online)
300 GHz Antennas Pattern Measurement over the entire circumference -- To Extend the Applicable Frequency Range of Recommendation ITU-R F.699 for 6G --
Keizo Inagaki, Hirokazu Sawada, Katsumi Fujii, Hiroyo Ogawa, Atsushi Kanno, Fumihide Kojima, Shingo Saito, Norihiko Sekine, Akifumi Kasamatsu, Iwao Hosako (NICT)
 [more]
MWP, PN, EMT, PEM, IEE-EMT [detail] 2020-01-30
10:35
Kyoto Dosisha Univ. Experimental Study on a Two-Frequency Secondary-Radar System Using Large Radio Anechoic Chamber
Masuda Satomi, Erika Shigematsu, Kunihisa Jitsuno (Waseda Univ.), Keizo Inagaki, Atsushi Kanno (NICT), Tetsuya Kawanishi (Waseda Univ.) PN2019-36 EMT2019-76 MWP2019-50
 [more] PN2019-36 EMT2019-76 MWP2019-50
pp.11-14
MWP, PN, EMT, PEM, IEE-EMT [detail] 2020-01-30
13:00
Kyoto Dosisha Univ. [Invited Talk] Short-Focus Lens Design for Terahertz Ray
Keita Miyazawa (Waseda Univ.), Atsushi Kanno, Shingo Saito, Keizo Inagaki (NICT), Tetsuya Kawanishi (Waseda Univ.)
Polyethylene and polypropylene, which have high transmittance in the terahertz band, are commonly used for terahertz len... [more]
MWP, PN, EMT, PEM, IEE-EMT [detail] 2020-01-31
12:10
Kyoto Dosisha Univ. Estimation of non-linearity in photodetectors for wide-band signals
Yuichiro Ito, Yuta Maeda, Yuki Shimamura (Waseda U), Keizo Inagaki (NICT), Kunihisa Jitsuno, Tetsuya Kawanishi (Waseda U) PN2019-51 EMT2019-91 MWP2019-65
 [more] PN2019-51 EMT2019-91 MWP2019-65
pp.103-106
PEM
(Workshop)
2019-11-18
- 2019-11-19
Mie Sinfonia Technology Hibiki Hall Ise (Ise Tourism and Culture Hall) Short-Focus Lens Design for Terahertz Ray
Keita Miyazawa (Waseda Univ.), Atsushi Kanno, Shingo Saito, Keizo Inagaki (NICT), Tetsuya Kawanishi (Waseda Univ.)
Polyethylene and polypropylene, which have high transmittance in the terahertz band, are commonly used for terahertz len... [more]
MWP 2019-05-22
16:30
Tokyo Kikai-Shinko-Kaikan Bldg. Preliminary Experimental Study on a Two-Frequency Secondary-Radar System to Detect Pedestrians beyond Blind Corners
Keizo Inagaki (NICT), Motoki Shirai, Tetsuya Miura, Kunihisa Jitsuno, Tetsuya Kawanishi (Waseda Univ.) MWP2019-5
Authors are studying on a two-frequency secondary radar system to prevent traffic accidents between pedestrians and vehi... [more] MWP2019-5
pp.19-22
OCS, CS
(Joint)
2019-01-17
12:50
Okinawa Nobumoto Ohama Memorial Hall (Ishigaki Island) Handover-Free Communications for High-Speed Trains Using Ultrafast WDM Fiber-Wireless Backhaul System in W Band
Pham Tien Dat, Atsushi Kanno, Keizo Inagaki, Naokatsu Yamamoto (NICT), Tetsuya Kawanishi (Waseda Univ.) OCS2018-69
(Advance abstract in Japanese is available) [more] OCS2018-69
pp.7-12
MWP
(2nd)
2018-08-06 Shimane Shimane Prefectural Convention Center (Matsue City) Achromatic Lens Design for Terahertz Ray
Keita Miyazawa (Waseda Univ.), Keizo Inagaki, Atsushi Kanno (NICT), Tetsuya kawanishi (Waseda Univ.)
Terahertz technology has been studied as a method for non-destructive imaging with high resolution. We designed lens dev... [more]
MWP
(2nd)
2018-08-06 Shimane Shimane Prefectural Convention Center (Matsue City) Parallel Mach-Zehnder Modulator Characterization Method using Simultaneous Transcendental Equations
Hugo S. C. Freire (Waseda Univ.), Keizo Inagaki (NICT), Tetsuya Kawanishi (Waseda Univ.)
Parallel Mach-Zehnder optical modulators have imperfections that affect the generation of high-order modulation signals.... [more]
MWP
(2nd)
2018-08-06 Shimane Shimane Prefectural Convention Center (Matsue City) Laser linewidth measurement using optical two-tone
Jun Mochizuki (Waseda Univ.), Keizo Inagaki, Atsushi Kanno (NICT), Tetsuya Kawanishi (Waseda Univ.)
We investigated a measurement method of laser linewidth. Self-delayed heterodyne interference is available as a method f... [more]
MWP
(2nd)
2018-08-06 Shimane Shimane Prefectural Convention Center (Matsue City) [Poster Presentation] Study on interference between RAUs of linear cell radar
Kei Akama (Waseda Univ.), Keizo Inagaki (NICT), Tetsuya Kawanishi (Waseda Univ.)
This paper reports a study on interference between remote access units (RAUs) of linear cell radar in Airport. Linear ce... [more]
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