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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 39  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
OPE, OCS, LQE 2022-10-20
15:45
Ehime
(Primary: On-site, Secondary: Online)
Theoretical and Experimental Investigation of Frequency Chirp Induced by Inter-Arm Imbalance in Mach-Zehnder Silicon Optical Modulators
Tadashi Murao, Jun Ushida, Hiroyuki Takahashi, Masatoshi Tokushima, Akemi Shiina, Tsuyoshi Horikawa (PETRA)
(To be available after the conference date) [more]
MW 2022-03-04
09:20
Online Online A study of diode linearizer for 100 GHz amplifier toward 6G
Sumire Aoki, Hiroshi Hamada, Hiroto Yamamoto, Atsushi Fukuda (NTT DOCOMO), Jyo Teruo, Hiroyuki Takahashi (NTT), Hiroshi Okazaki, Yasunori Suzuki (NTT DOCOMO) MW2021-129
Sub-THz band (frequency range above 100 GHz) are gathering attention to implement 6G high-speed wireless communications.... [more] MW2021-129
pp.100-104
HCS 2022-01-29
15:30
Online Online Development of a restaurant search system using expert sensory tags
Hiroyuki Takahashi (RItsumeikan Univ.), Takeshi Kadokami, Tetsuro Takaoka (AJFA), Junji Watanabe (NTT), Jun Yamadera (Eyes, Japan), Yoshikazu Kusumi, Takuya Murayama (NTT), Haruo Noma, Yuji Wada (RItsumeikan Univ.)
 [more]
ED, THz 2021-12-21
09:00
Miyagi
(Primary: On-site, Secondary: Online)
[Invited Talk] InP HEMT based Tera-hertz IC Fabrication Technology for Beyond 5G/6G Application
Takuya Tsutsumi, Hirosh Hamada, Hiroki Sugiyama, Teruo Jyo, Hiroyuki Takahashi, Hideaki Matsuzaki (NTT) ED2021-55
In this report, we focuses fabrication processes of InP-based hight-mobility transistors (InP-HEMTs) and Tera-Hertz mono... [more] ED2021-55
pp.34-39
OCS, OPE, LQE 2021-10-22
16:30
Online Online Compact Model and Parametric Extraction for Optical Phase Shifters in Carrier-Depletion Mach-Zehnder Silicon Modulators
Tadashi Murao, Jun Ushida, Hiroyuki Takahashi, Masatoshi Tokushima, Akemi Shiina, Tsuyoshi Horikawa (PETRA) OCS2021-18 OPE2021-38 LQE2021-17
Testing processes in silicon photonics are totally different from electronics and reduction of testing time has been an ... [more] OCS2021-18 OPE2021-38 LQE2021-17
pp.27-32
OCS, OPE, LQE 2021-10-22
16:55
Online Online Theoretical and Experimental Investigation of OMA Penalty by Inter-Arm Imbalance in Mach-Zehnder Silicon Optical Modulators
Tadashi Murao, Jun Ushida, Hiroyuki Takahashi, Masatoshi Tokushima, Akemi Shiina, Tsuyoshi Horikawa (PETRA) OCS2021-19 OPE2021-39 LQE2021-18
In this paper, an inter-arm imbalance and its impact on the optical modulation amplitude (OMA) are investigated for carr... [more] OCS2021-19 OPE2021-39 LQE2021-18
pp.33-38
HCGSYMPO
(2nd)
2020-12-15
- 2020-12-17
Online Online A Consideration on Detecting Anormal Respondents in Large Questionnaire Response Data
Hiroyuki Takahashi, Wataru Kameyama, Mutsumi Suganuma (Waseda Univ.)
In a questionnaire with a variety of questions for consumers to answer, there may be a small number of specific answers ... [more]
R, LQE, OPE, CPM, EMD 2020-08-28
14:55
Online Online [Invited Talk] Waveguide Germanium Avalanche Photodiode with High Responsivity and Low Dependence on Polarization Capable of Receiving 1600nm Band Wavelength
Hideki Ono (OKI), Jun-ichi Fujikata, Masataka Noguchi (PETRA), Hiroyuki Takahashi, Masanori Itoh, Daisuke Shimura, Hiroki Yaegashi, Hironori Sasaki (OKI) R2020-15 EMD2020-14 CPM2020-7 OPE2020-27 LQE2020-7
We developed Ge-APDs having characteristics of low dependency on polarization and high responsivity at the wavelength of... [more] R2020-15 EMD2020-14 CPM2020-7 OPE2020-27 LQE2020-7
pp.29-32
SCE 2019-08-09
10:50
Ibaraki National Institute of Advanced Industrial Science and Technology Microwave SQUID multiplexer for readout of optical TES array
Naoki Nakada (The Univ. of Tokyo/AIST), Kaori Hattori (AIST), Yuki Nakashima (AIST/JAXA), Fuminori Hirayama, Ryo Yamamoto, Hitrotake Yamamori, Satoshi Kohjiro, Akira Sato (AIST), Hiroyuki Takahashi (The Univ. of TOkyo), Daiji Fukuda (AIST) SCE2019-10
Photon imaging technology is applied in various research fields such as quantum information communication and biological... [more] SCE2019-10
pp.9-13
OFT 2018-01-19
11:45
Kumamoto   Non-entry manhole inspection technology -- Image analysis to improve the efficiency of manhole inspection --
Chihiro Saito, Takayuki Furukawa, Okutsu Masaru, Hiroyuki Takahashi, Masafumi Nakagawa, Syuichi Yanagi (NTT) OFT2017-68
(Advance abstract in Japanese is available) [more] OFT2017-68
pp.57-60
SCE 2015-10-08
16:30
Miyagi Tohoku Univ. Linearized Readout of TES array based on Flux Ramp Modulation for Microwave SQUID Multiplexer
Tomoya Irimatsukawa (UT), Fuminori Hirayama, Akira Sato, Hitoshi Sasaki, Hirotake Yamamori, Shuichi Nagasawa, Daiji Fukuda, Mutsuo Hidaka, Yasushi Sato, Satoshi Kohjiro (AIST), Masashi Ohno, Hiroyuki Takahashi (UT) SCE2015-26
 [more] SCE2015-26
pp.35-40
AP, RCS
(Joint)
2014-11-13
09:50
Yamagata Yamagata University, Yonezawa Campus A Study of Path Loss Correction Formula for a Cellular Base Station Looking down at Sloping Ground Area
Hiroyuki Takahashi, Kohei Ohnishi (Okayama Univ.), Masahiro Nishi, Koichi Shin (Hiroshima City Univ.), Shinichi Ichitsubo (Kyushu Inst. of Tech.), Shigeru Tomisato, Masaharu Hata (Okayama Univ.) AP2014-141
Residential areas in Japan are often located on a sloping ground neighboring urban district. In such area, the base stat... [more] AP2014-141
pp.73-78
SCE 2014-10-16
11:45
Miyagi Tohoku University, RIEC Development of TES microcalorimeter with Superconducting bulk Ta absorber for gamma-ray measurement
Tomoya Irimatsukawa, Shuichi Hatakeyama, Masashi Ohno, Hiroyuki Takahashi (Univ. of Tokyo) SCE2014-46
 [more] SCE2014-46
pp.65-68
ED, MW 2014-01-17
11:25
Tokyo Kikai-Shinko-Kaikan Bldg. 120-GHz-band 10-Gbit/s Fully-integrated Wireless Equipment using QPSK Transmitter and Receiver based on InP HEMT MMICs
Hiroyuki Takahashi, Jun Takeuchi, Akihiko Hirata (NTT) ED2013-127 MW2013-192
 [more] ED2013-127 MW2013-192
pp.97-102
MW 2013-11-21
15:45
Kagoshima Kagoshima Prefectural Culture Center [Special Talk] Report on 2013 IEEE MTT-S International Microwave Symposium
Masataka Ohira (Saitama Univ.), Tetsuya Ueda (Kyoto Inst. Tech.), Hiroshi Okazaki (NTT DOCOMO), Eigo Kuwata (Mitsubishi Electric Corp.), Hiroyuki Takahashi (NTT), Shotaro Nagai (Yamaguchi Univ.), Zhewang Ma (Saitama Univ.), Shingo Yamanouchi (NEC) MW2013-140
This is a report on 2013 IEEE MTT-S International Microwave Symposium (IMS 2013) held at Seattle, WA, USA, on June 2-7, ... [more] MW2013-140
pp.51-60
SCE 2013-10-02
15:35
Miyagi Tohoku University, RIEC [Invited Talk] Superconducting Transition Edge sensor for gamma-ray spectroscopy -- Aiming for nondestructive measurement of nuclear material --
Masashi Ohno, Shuichi Hatakeyama, Tomoya Irimatsukawa, Hiroyuki Takahashi (Univ. of Tokyo), R.m,t, Damayanthi, Chiko Otani (RIKEN), Takashi Yasumune, Kouji Takasaki (JAEA) SCE2013-24
(To be available after the conference date) [more] SCE2013-24
pp.27-30
OPE, LQE, CPM, EMD, R 2013-08-30
11:55
Hokkaido sun-refre Hakodate High-speed and efficient operation of PIN-diode-based silicon modulator using side-wall grating waveguide
Suguru Akiyama, Takeshi Baba, Masahiko Imai (PETRA), Naoki Hirayama (AIST), Hiroyuki Takahashi (PETRA), Yoshiji Noguchi, Tsuyoshi Horikawa (AIST), Tatsuya Usuki (PETRA) R2013-53 EMD2013-59 CPM2013-78 OPE2013-82 LQE2013-52
 [more] R2013-53 EMD2013-59 CPM2013-78 OPE2013-82 LQE2013-52
pp.123-128
MW 2013-03-07
15:25
Hiroshima Hiroshima Univ. [Special Talk] 10-Gb/s BPSK modulator and demodulator a 120-GHz-band wireless link
Hiroyuki Takahashi, Toshihiko Kosugi, Akihiko Hirata, Koichi Murata, Naoya Kukutsu (NTT) MW2012-179
 [more] MW2012-179
pp.109-114
MW, ED 2013-01-17
16:25
Tokyo Kikai-Shinko-Kaikan Bldg. 120-GHz-band 20-Gb/s QPSK Transmitter and Receiver modules
Hiroyuki Takahashi, Toshihiko Kosugi, Akihiko Hirata, Jun Takeuchi, Koichi Murata, Naoya Kukutsu (NTT) ED2012-116 MW2012-146
NTT laboratories are developing a 120-GHz-band wireless link using quadrature-phase-shift keying (QPSK). We have reporte... [more] ED2012-116 MW2012-146
pp.23-28
MW, ED 2013-01-17
16:50
Tokyo Kikai-Shinko-Kaikan Bldg. Evaluation of fade slope due to weather for 120-GHz-band wireless link
Akihiko Hirata, Jun Takeuchi, Hiroyuki Takahashi, Naoya Kukutsu (NTT) ED2012-117 MW2012-147
NTT has been developing 120-GHz-band wireless link that can transmit 10-Gbit/s data in order to meet the increase in the... [more] ED2012-117 MW2012-147
pp.29-33
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