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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| 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)  MW2022-68 |
We developed a down-converter module with a standard gain horn antenna using polyamide-12 polymer powder bed fusion. The... [more] | MW2022-68 pp.1-6 |
| 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 |
| PN | 2021-03-02 10:50 |
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 pp.62-65 |
| RISING (2nd) |
2019-11-26 10:30 |
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 14:00 |
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 pp.21-24 |
| OFT | 2019-05-16 14:00 |
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 pp.25-28 |
| EMCJ, IEE-EMC | 2018-12-14 14:30 |
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 pp.63-67 |
|
| EE, CPM | 2014-02-27 11:00 |
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 pp.11-14 |
| EE, CPM | 2013-01-24 13:30 |
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 pp.29-34 |
|
| EE, CPM | 2013-01-24 13:55 |
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 pp.35-39 |
|
| EE, CPM | 2013-01-24 14:20 |
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 pp.41-45 |
|
| CPM, EE | 2012-02-10 15:10 |
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 pp.27-32 |
| EMCJ | 2009-06-05 12:00 |
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 pp.31-34 |
| EMCJ | 2008-11-20 15:45 |
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 pp.11-14 |
| EMCJ | 2008-04-25 14:35 |
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 pp.25-30 |
| EMCJ | 2005-12-09 14:45 |
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 pp.45-49 |
| EMCJ | 2005-05-26 11:20 |
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 pp.29-33 |
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