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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 16 of 16  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
MW 2021-05-20
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
PN 2021-03-02
Online Online Evaluation of Transmission Performance of Optically and Electrically Superimposed RF and Baseband Signal Transmission for Short-Reach Radio-over-Fiber Systems
Ryuichi Kobayashi (UEC), Takamitsu Aiba (YAZAKI Corp.), Motoharu Matsuura (UEC) PN2020-52
Analog radio-over-fiber is a practical technology to transmit radio frequency (RF) and baseband signals simultaneously. ... [more] PN2020-52
Tokyo Fukutake Learning Theater, Hongo Campus, Univ. Tokyo [Poster Presentation] Photonic Analog-to-Digital and Digital-to-Analog Conversion Using Semiconductor Optical Amplifiers
Takuya Okada, Ryuichi Kobayashi, Wang Rui, Masaki Sagara, Motoharu Matsuura (UEC)
Frequency chirp is a unique phenomenon in semiconductor optical amplifiers (SOAs), and provides intensity-to-frequency c... [more]
OFT 2019-05-16
Osaka I-site NANBA [Poster Presentation] Electrically-Superimposed Analog and Digital Signal Transmission Over Multimode Fibers
Ryuichi Kobayashi, Tatsuya Ohtsuki, Takuya Okada (UEC), Takamitsu Aiba (YAZAKI Corp.), Motoharu Matsuura (UEC) OFT2019-5
In future mobile networks, the use of wireless signals with a higher frequency will be required. Radio-over-fiber (RoF) ... [more] OFT2019-5
OFT 2019-05-16
Osaka I-site NANBA [Poster Presentation] Photonic Digital-to-Analog Conversion Using Frequency Chirp in a Quantum-Dot Semiconductor Optical Amplifier
Takuya Okada, Ryuichi Kobayashi, Motoharu Matsuura (UEC) OFT2019-6
In this work, we propose a photonic digital-to-analog conversion (PDAC) based on frequency chirp using a SOA and followi... [more] OFT2019-6
EMCJ, IEE-EMC 2018-12-14
Aichi   Study on Electromagnetic Inducted Voltage on Multi-point Grounded Conductor Based on 1/1000 Scale Model
Atsushi Nagao, Tetsuo Iezuka, Tetsuya Kaiden, Norihito Hirasawa, Hidenori Itou, Ryuichi Kobayashi (NTT East) EMCJ2018-94
Electromagnetic induction between power and telecommunication lines has been studied since early 1900’s [1]-[5], because... [more] EMCJ2018-94
EE, CPM 2014-02-27
Tokyo Kikai-Shinko-Kaikan Bldg. Electrochemical Properties of Lithium Air Secondary Batteries Incorporating Air Electrodes Loaded with RuO2 Catalysts
Masahiko Hayashi, Hironobu Minowa, Kaoru Asakura, Katsuya Hayashi, Ryuichi Kobayashi, Hiroto Kitabayashi (NTT) EE2013-50 CPM2013-151
 [more] EE2013-50 CPM2013-151
EE, CPM 2013-01-24
Kumamoto   Evaluation method for SOFC electrolyte breakdown condition due to anode oxidation
Yuri Tahara, Himeko Orui, Kimitaka Watanabe, Satoshi Sugita, Ryuichi Kobayashi (NTT) EE2012-33 CPM2012-155
Ni-Zirconia cermet is a common material of solid oxide fuel cell (SOFC) anode. It is normally used under reducing atmosp... [more] EE2012-33 CPM2012-155
EE, CPM 2013-01-24
Kumamoto   Development of Air Electrode Materials for Lithium Air Batteries
Masahiko Hayashi, Hironobu Minowa, Katsuya Hayashi, Ryuichi Kobayashi (NTT) EE2012-34 CPM2012-156
 [more] EE2012-34 CPM2012-156
EE, CPM 2013-01-24
Kumamoto   Electrochemical Properties of an Oxide Material for Sodium Secondary Batteries
Yoko Ono, Yuhki Yui, Elly Setiawati, Hironobu Minowa, Masahiko Hayashi, Katsuya Hayashi, Ryuichi Kobayashi (NTT) EE2012-35 CPM2012-157
 [more] EE2012-35 CPM2012-157
CPM, EE 2012-02-10
Tokyo Kikai-Shinko-Kaikan Bldg Development of manganese-based oxide electrocatalysts for lithium-air batteries
Hironobu Minowa, Masahiko Hayashi, Katsuya Hayashi, Ryuichi Kobayashi (NTT) EE2011-57 CPM2011-173
Lithium-air batteries are expected as a promising candidate for next-generation-high-energy-density battery. We have re... [more] EE2011-57 CPM2011-173
EMCJ 2009-06-05
Tokyo Tokyo Big Sight (Tokyo International Exihibition Center) Immunity Test of IP Device against Burst Impulsive Noises
Naomichi Nakamura, Yoshiharu Akiyama, Yasunao Suzuki, Ryuichi Kobayashi (NTT) EMCJ2009-27
The use of IP services is spreading widely with the advent of IP network. These services, especially real-time services ... [more] EMCJ2009-27
EMCJ 2008-11-20
Tokyo AIST Tokyo Waterfront Electromagnetic Noise Measuring System using Independent Component Analysis Scheme
Masao Masugi, Norihito Hirasawa, Ryuichi Kobayashi (NTT Corp.) EMCJ2008-76
This report describes an electromagnetic noise measuring system that can separate multiple interfering signals due to cr... [more] EMCJ2008-76
EMCJ 2008-04-25
Tokyo NTT Information Sharing Lab. Simultaneous measurement method for conducted common-mode voltage and current
Ryuichi Kobayashi, Naomichi Nakamura, Kimihiro Tajima (NTT) EMCJ2008-5
 [more] EMCJ2008-5
EMCJ 2005-12-09
Gifu Gifu University *
Tetsuya Tominaga, Nobue Aoki, Kimihiro Tajima, Hiroshi Yamane (NTT Energy and Environment Systems and Laboratories), Ryuichi Kobayashi (NTT East)
The rapid development of telecommunication systems has made it easy to introduce information technology (IT) into homes ... [more] EMCJ2005-122
EMCJ 2005-05-26
Hyogo Awaji Yumebutai International Conference Center A Study of Continuous and Transient Disturbance Wave Characteristics of Fluorescent Light Using an Inverter System
Shin Kanno (NTT), Yoshinori Saito (NTT EAST), Tetsuya Tominaga (NTT), Ryuichi Kobayashi, Yasuhiko Tada (NTT EAST), Hiroshi Yamane (NTT)
This paper describes measurement results of a disturbance produced by a fluorescent light. With advent of electronics de... [more] EMCJ2005-15
 Results 1 - 16 of 16  /   
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