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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 20  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
EMCJ, MW, EST, IEE-EMC [detail] 2022-10-13
- 2022-10-14
Akita Akita University
(Primary: On-site, Secondary: Online)
Dielectric Measurement of Li(N(SO2CF3)2) Solutions Based on the Cut-off Circular Waveguide Reflection Method
Kouji Shibata (Hachinohe Inst. of Tech.), Erika Otani, Jihae Han (Nigata Univ.), Kohei Fujiwara, Kouichi Tokita (TIRI), Yasuhiro Umebayashi (Nigata Univ.)
(To be available after the conference date) [more]
MI 2022-09-15
14:00
Kanagawa
(Primary: On-site, Secondary: Online)
Unsupervised Deep Learning for Cell Detection Based on Low-rank and Sparse Priors
Keita Takeda, Kazuki Matsuo, Kohei Fujiwara, Eiji Mitate, Tomoya Sakai (Nagasaki Univ.)
 [more]
AP, MW
(Joint)
2022-09-14
15:15
Ehime The Museum of Art, EHIME
(Primary: On-site, Secondary: Online)
Development of 28 GHz band down-converter module with antenna using polymer powder bed fusion and plating
Ryuichi Kobayashi, Kohei Fujiwara, Yuta Watanabe, Satoshi Kuwahara, Shota Takemura, Kohei Takizawa (TIRI)
 [more]
AP, MW
(Joint)
2022-09-14
16:05
Ehime The Museum of Art, EHIME
(Primary: On-site, Secondary: Online)
Dielectric Measurement of LiBF4 and LiPF6 Solutions Based on the Cut-off Circular Waveguide Reflection Method
Kouji Shibata (Hachinohe Inst. of Tech.), Erika Otani, Jihae Jan (Nigata Univ.), Kohei Fujiwara, Kouichi Tokita (TIRI), Yasuhiro Umebayashi (Nigata Univ.)
(To be available after the conference date) [more]
MWPTHz, EST, MW, EMT, OPE, IEE-EMT [detail] 2022-07-19
09:20
Hokkaido Asahikawa Civic Culture Hall
(Primary: On-site, Secondary: Online)
Dielectric Measurement of liquids at Frequency Range of 10 - 1000MHz Based on the Combination of Cut-off Circular Waveguide Reflection Method and a Large-bore Jig
Kouji Shibata (Hachinohe Institute of Tech.), Kohei Fujiwara (TIRI) EMT2022-17 MW2022-41 OPE2022-20 EST2022-18 MWPTHz2022-15
(To be available after the conference date) [more] EMT2022-17 MW2022-41 OPE2022-20 EST2022-18 MWPTHz2022-15
pp.52-56
MWPTHz, EST, MW, EMT, OPE, IEE-EMT [detail] 2022-07-19
13:00
Hokkaido Asahikawa Civic Culture Hall
(Primary: On-site, Secondary: Online)
Development of SIW power divider with waveguide to microstrip line transducer
Kohei Fujiwara, Kouichi Tokita (TIRI), Makoto Yoshida (CDEX) EMT2022-22 MW2022-46 OPE2022-25 EST2022-23 MWPTHz2022-20
A conventional vector network analyzer employs the super-heterodyne scheme to expand a measuring frequency band. However... [more] EMT2022-22 MW2022-46 OPE2022-25 EST2022-23 MWPTHz2022-20
pp.73-78
MW 2022-05-20
10:50
Kyoto Kyoto Univ.
(Primary: On-site, Secondary: Online)
Development of a power divider based on SIW structure in the 60-GHz-band
Kohei Fujiwara, Kouichi Tokita (TIRI), Makoto Yoshida (CDEX) MW2022-18
 [more] MW2022-18
pp.18-22
MW 2022-03-04
13:00
Online Online Expantion of dynamicrange on a six-port correlator in the transmission measurement
Kohei Fujiwara, Kouichi Tokita (TIRI), Toshiyuki Yakabe (MPL), Makoto Yoshida (CDEX) MW2021-136
A conventional vector network analyzer employs the super-heterodyne scheme to expand a measuring frequency band. The cir... [more] MW2021-136
pp.140-145
MW 2021-11-19
09:55
Kagoshima Kagoshima University
(Primary: On-site, Secondary: Online)
Transmission measurement on a six-port correlator in the 28 GHz band
Kohei Fujiwara, Kouichi Tokita (TIRI), Toshiyuki Yakabe (MPL), Makoto Yoshida (CDEX) MW2021-75
 [more] MW2021-75
pp.46-51
MI, MICT [detail] 2021-11-05
10:00
Online Online [Short Paper] Prediction of therapeutic response in Sjogren's syndrome using ultrasound images of parotid glands
Kohei Fujiwara, Takeda Keita, Yukinori Takagi, Miho Sasaki, Sato Eida, Ikuo Katayama, Misa Sumi, Tomoya Sakai (Nagasaki Univ.) MICT2021-30 MI2021-28
The purpose of this study was to predict the response to treatment of SS from ultrasound (US) images of salivary glands ... [more] MICT2021-30 MI2021-28
pp.15-16
EST, MW, EMCJ, IEE-EMC [detail] 2021-10-07
10:05
Online Online VNA calibration stability in on-wafer measurement in millimeter-wave band
Kohei Fujiwara, Takashi Kondo (TIRI), Shinji Hara, Noriyuki Tanba, Eiji Suematsu (Nagoya University) EMCJ2021-28 MW2021-40 EST2021-30
 [more] EMCJ2021-28 MW2021-40 EST2021-30
pp.6-10
MW, AP
(Joint)
2021-09-10
11:35
Online Online Broadband and Highly Accurate Calibration of Input Impedance for a Coaxial-Tip Using an LCR Meter Based on the RF I-V Method and Related Application to Dielectric Measurement for Liquids
Kouji Shibata (Hachinohe Inst. of Tech.), Kohei Fujiwara (TIRI) MW2021-36
(To be available after the conference date) [more] MW2021-36
pp.18-23
MW 2021-05-20
13:05
Online Online Development of waveguide based on 3D printing with plating on plastic technology in V- and D-band
Kohei Fujiwara, Ryuichi Kobayashi, Satoshi Kuwahara, Yuta Watanabe, Kohei Takizawa, Shota Takemura (TIRI) MW2021-5
In general, a waveguide part is expensive and has a good thermal conductivety because of based on copper alloy. Therefor... [more] MW2021-5
pp.1-4
MW, EST, EMCJ, PEM, IEE-EMC [detail] 2020-10-22
09:55
Online Online V-Band six-port type reflectometer based reflection measurement system using a standing wave detector
Kohei Fujiwara, Kouichi Tokita (TIRI), Toshiyuki Yakabe (MPL) EMCJ2020-26 MW2020-40 EST2020-28
A general vector network analyzer employs the super-heterodyne scheme to expand a measuring frequency band, easily. On t... [more] EMCJ2020-26 MW2020-40 EST2020-28
pp.9-13
MWP 2019-05-22
16:05
Tokyo Kikai-Shinko-Kaikan Bldg. Study of automatic bias control system for middle- and long-range radio over fiber transmission
Atsushi Kanno, Naokatsu Yamamoto (NICT), Kohei Fujiwara, Kouichi Tokita (TIRI) MWP2019-4
We study a method of an automatic bias voltage controller for the optical single-sideband (SSB) modulation. The SSB modu... [more] MWP2019-4
pp.15-18
MW, ICD 2019-03-15
13:05
Okinawa   IEEE802.11ad test system based low phase noise Gunn oscillator and fundamental mixer
Kohei Fujiwara, Hidehiko Yamaoka (TIRI), Tatsunori Onzuka, Shingo Ozaki (NDK), Yoneo Akita, Yoshikazu Fujinaka (Mebius) MW2018-174 ICD2018-118
We developed a simple-structure IEEE802.11ad test system in the 60 GHz band. The test system based on a down-converter c... [more] MW2018-174 ICD2018-118
pp.97-102
EST, MW, EMCJ, IEE-EMC [detail] 2018-10-18
16:10
Aomori Hachinohe Chamber of Commerce and Industry(Hachinohe city, Aomori) A Simple-structure Automotive FMCW Radar Test System using PLL-Gunn Oscillator and Fundamental Mixer
Kohei Fujiwara, Hidehiko Yamaoka (TIRI), Tatsunori Onzuka, Shingo Ozaki (NIHON DEMPA KOGYO), Yoneo Akita, Yoshikazu Fujinaka (Mebius) EMCJ2018-44 MW2018-80 EST2018-66
We developed a simple-structure 79 GHz FMCW radar test system for an automobile. The test system based on a down-convert... [more] EMCJ2018-44 MW2018-80 EST2018-66
pp.65-70
MWP 2018-05-18
16:35
Tokyo Kikai-Shinko-Kaikan Bldg. Radio-over-Fiber based SSB optical modulation on IEEE802.11ad packet transmission in 90-GHz band
Kohei Fujiwara (TIRI), Atsushi Kanno (NICT), Koichi Tokita (TIRI) MWP2018-5
We demonstrated IEEE802.11ad compliant packet transmission in the W-band using a radio-over-fiber technology with a sing... [more] MWP2018-5
pp.23-26
SRW 2014-06-16
11:10
Kanagawa Mitsubishi Electric Development of a frequency converter using the harmonic mixer for Ultra Wide Band communications in 60 GHz band
Kohei Fujiwara, Takeshi Kobayashi (TIRI), Nobuhiko Shibagaki, Hiroshi Hanyu (Hitachi) SRW2014-4
We developed a down converter based on the harmonic mixer for 60 GHz band wireless communications as IEEE802.11ad/15.3c.... [more] SRW2014-4
pp.17-21
SRW 2013-06-17
13:50
Kanagawa Fujitsu Evaluation of 60 GHz band harmonic mixers using a vector network analyzer
Kohei Fujiwara, Takeshi Kobayashi (TIRI), Nobuhiko Shibagaki, Hiroshi Hanyu (Hitach) SRW2013-17
 [more] SRW2013-17
pp.31-34
 Results 1 - 20 of 20  /   
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