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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| AP, RCS (Joint) |
2012-11-16 10:00 |
Tokyo | Tokyo Denki University | Prototype of an X/Ka-Band Primary Radiator for Satellite-Borne Cassegrain Antennas Yuichi Kato, Takehiko Kobayashi (Tokyo Denki Univ.), Kenichi Kagoshima, Shigeki Takeda (Ibaraki Univ.), Atsushi Tomiki, Tomoaki Toda (JAXA)  AP2012-106 |
Dual (X and Ka) band downlink operation is demanded scientific satellite missions, to facilitate much higher data rate a... [more] | AP2012-106 pp.77-82 |
| AP | 2012-05-24 13:50 |
Fukuoka | ACROS Fukuoka | Statistical Modeling of Ultra-Wideband Channels between On-body Antennas Depending on Room Volume Miyuki Hirose, Hironobu Yamamoto, Masato Koiwai, Takehiko Kobayashi (Tokyo Denki Univ.) AP2012-16 |
Statistical multipath channel modeling of on-body ultra wideband (UWB) radio channels has been presented based on measur... [more] | AP2012-16 pp.29-34 |
| EMCJ, ITE-BCT | 2012-03-16 11:45 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Evaluation of Electric Field Strength Computation in Boundary Region between Near and Far Fields Masaru Nakayama, Takehiko Kobayashi (Tokyo Denki Univ.) EMCJ2011-136 |
An equation for calculating electric field strength has been widely used for electromagnetic applications. This equation... [more] | EMCJ2011-136 pp.37-42 |
| WBS | 2011-10-21 10:00 |
Niigata | Niigata University Satellite Campus "Tokimeito" | [Poster Presentation]
Ultra Wideband Propagation Characteristics around the Human Body When Changing Location and Room Height Masato Koiwai, Takehiko Kobayashi (Tokyo Denki Univ.) WBS2011-28 |
Radio propagation has been intensively studied for recently-emerging wireless body area network (WBAN) applications. To ... [more] | WBS2011-28 pp.35-40 |
| SANE | 2011-10-18 10:35 |
Overseas | Udayana University, Bali, Indonesia | Estimation of Angle of Arrival and Resolvable Multipath Components of an Ultra-Wideband Monopulse Radar Natsuki Hashimoto, Hiromitsu Aoki (Tokyo Denki Univ.), Naohiko Iwakiri (Univ. of Tokyo), Takehiko Kobayashi (Tokyo Denki Univ.) SANE2011-82 |
High range resolution is inherently provided with Ka-band ultra-wideband (UWB) vehicular radars. The authors have dev... [more] | SANE2011-82 pp.105-110 |
| RCS, MoNA, SR (Joint) |
2011-03-04 14:50 |
Kanagawa | YRP | Evaluation of Path Visibility between Base and Mobile Stations in Cellular Communication Systems (II)
-- Simulation Using Virtual Building Data -- Kazuya Iwasaki, Hideki Yoshizawa, Takehiko Kobayashi (Tokyo Denki Univ) RCS2010-312 |
Radio propagation models for cellular mobile communication depend on line-of-sight (LOS) or non-line-of-sight (NLOS) st... [more] | RCS2010-312 pp.373-378 |
| SIP, RCS | 2011-01-21 10:50 |
Kagoshima | Evaluation of path visibility between base and mobile stations in cellular communication networks (I)
-- Simulation using real building data and its verification -- Hideki Yoshizawa, Takehiko Kobayashi (Tokyo Denki Univ.) SIP2010-102 RCS2010-232 |
[more] | SIP2010-102 RCS2010-232 pp.197-202 |
|
| SANE | 2010-11-26 14:25 |
Kanagawa | JAXA Sagamihara campus | Measurements and characterization of ultra wideband radio propagation channels and transmission thoroughputs within small Spacecrafts Tatsuya Ichikawa, Akihisa Matsubara (TDU), Atsushi Tomiki, Tomoaki Toda (JAXA), Takehiko Kobayashi (TDU) SANE2010-120 |
The replacement of wired data buses among space-borne subsystems with wireless connections enhances onboard component la... [more] | SANE2010-120 pp.19-24 |
| SANE | 2010-11-26 15:40 |
Kanagawa | JAXA Sagamihara campus | Experimental Evaluation of Low Phase Noise Ka-Band Coherent Transmission Function for X-Band Deep Space Digital Transponder Atsushi Tomiki, Yuta Kobayashi, Tomoaki Toda (JAXA), Isamu Nozaki, Takehiko Kobayashi (TDU) SANE2010-123 |
A Ka-band coherent transmitter function has been designed to extend a conventional X-band deep space digital transponder... [more] | SANE2010-123 pp.37-42 |
| SANE | 2010-10-29 09:40 |
Overseas | Ramada Hotel, Jeju-do, Korea | Evaluation of a UWB Phase-Comparison Monopulse Short-Range Radar Hironori Enkouji, Natsuki Hashimoto, Hiromitsu Aoki, Naohiko Iwakiri, Takehiko Kobayashi (Tokyo Denki Univ.) SANE2010-115 |
Ultra wideband (UWB) vehicular radars, less expensive than conventional millimeter-wave radars, have attracted attention... [more] | SANE2010-115 pp.267-272 |
| WBS | 2010-10-08 09:30 |
Nara | Naramachi Center | [Poster Presentation]
Ultra Wideband Propagation Loss Models for Wireless Body Area Networks Considering Room Volume Masato Koiwai, Takehiko Kobayashi (Tokyo Denki Univ.) WBS2010-28 |
This report describes ultra wideband (UWB) radio propagation measurements and modeling for wireless body area network (W... [more] | WBS2010-28 pp.41-46 |
| WBS | 2010-10-08 09:30 |
Nara | Naramachi Center | [Poster Presentation]
Ultra-Wideband Spatio-Temporal Channel Sounding with Use of an OFDM Signal in an Indoor Environment Daisuke Sugizaki, Soichi Saito, Naohiko Iwakiri, Takehiko Kobayashi (Tokyo Denki Univ.) WBS2010-29 |
Microwave vector network analyzer (VNA) has been widely used to as an ultra wideband (UWB) channel sounder. However, ch... [more] | WBS2010-29 pp.47-52 |
| ITE-BCT, ITE-CE, MoNA, CQ [detail] | 2010-09-10 14:40 |
Fukuoka | NHK Fukuoka Station | Why Wireless Asynchronous Transfer Mode Technology Failed Yusuke Sekiwa, Takehiko Kobayashi (Tokyo Denki Univ.) MoMuC2010-38 |
There have been a number of significant successes in the area of mobile multimedia communications along with the remarka... [more] | MoMuC2010-38 pp.87-92 |
| IT, ISEC, WBS | 2010-03-04 09:25 |
Nagano | Nagano-Engineering Campus, Shinshu University | Experimental Validation of an Ultra Wideband Spatio-Temporal Channel Sounder Employing an OFDM signal in a Narrowband Interference Environment Hiroto Iiduka, Daisuke Sugizaki, Naohiko Iwakiri, Takehiko Kobayashi (Tokyo Denki Univ.) IT2009-82 ISEC2009-90 WBS2009-61 |
Ultra wideband (UWB) channel sounding capabilities were evaluated in a narrowband interference environment with use of a... [more] | IT2009-82 ISEC2009-90 WBS2009-61 pp.75-80 |
| IT, ISEC, WBS | 2010-03-04 10:50 |
Nagano | Nagano-Engineering Campus, Shinshu University | Direction Finding Performances in UWB Short-Range Phase-Comparison Monopulse Radars Hironori Enkouji, Takehiko Nishide, Natsuki Hashimoto, Naohiko Iwakiri, Takehiko Kobayashi (Tokyo Denki Univ.) IT2009-85 ISEC2009-93 WBS2009-64 |
Ultra wideband (UWB) vehicular radars have attracted attention from a viewpoint of reducing traffic accident victims. T... [more] | IT2009-85 ISEC2009-93 WBS2009-64 pp.93-98 |
| MoNA, IN (Joint) |
2009-11-12 09:40 |
Fukuoka | Fukuoka Institute of Technology | Case Studies of Failures and Errors in Mobile Multimedia Services Yusuke Sekiwa, Takehiko Kobayashi (Tokyo Denki Univ.) MoMuC2009-40 |
Notable technological progress and market expansion has been achieved in mobile multimedia services, such as mobile inte... [more] | MoMuC2009-40 pp.7-12 |
| SANE | 2009-11-03 14:50 |
Overseas | Fudan University (Shanghai) | Stochastic Modeling of Phase Noise for Deep Space Communication Systems Naohiko Iwakiri (Tokyo Denki Univ.), Atsushi Tomiki, Tomoaki Toda (JAXA), Takehiko Kobayashi (Tokyo Denki Univ.) SANE2009-110 |
(To be available after the conference date) [more] | SANE2009-110 pp.153-158 |
| WBS | 2009-10-16 13:00 |
Osaka | [Poster Presentation]
Dependence of Ultra-Wideband Peak Power Measurements on Makes of Microwave Spectrum Analyzers Akio Yokokawa (Tokyo Denki Univ.), Atsushi Tomiki (JAXA), Takehiko Kobayashi (Tokyo Denki Univ.) WBS2009-29 |
Spectrum analyzers (SAs) are usually used to measure average and peak power spectra of ultra wideband (UWB) signals. Whe... [more] | WBS2009-29 pp.25-30 |
|
| WBS | 2009-10-16 13:00 |
Osaka | [Poster Presentation]
Development of an Ultra-Wideband Short-Range Radar at Ka-Band Suppressing Carrier Leakage Hironori Enkouji, Takehiko Nishide, Natsuki Hashimoto, Takehiko Kobayashi (Tokyo Denki Univ.) WBS2009-30 |
Modulated impulse radars have been most commonly used for Ka-band ultra-wideband (UWB) short-range vehicular application... [more] | WBS2009-30 pp.31-36 |
|
| SANE | 2009-08-28 11:45 |
Kanagawa | JAXA Sagamihara campus | Experimental Evaluation of Ultra Wideband Radio Propagation in Spacecrafts for Applying Wireless Technologies to Interface Buses Akihisa Matsubara, Tatsuya Ichikawa (Tokyo Denki Univ./JAXA), Atsushi Tomiki, Tomoaki Toda (JAXA), Takehiko Kobayashi (Tokyo Denki Univ./JAXA) SANE2009-54 |
Ultra wideband (UWB) propagation was measured and characterized within spacecrafts, with a view to partly replacing onbo... [more] | SANE2009-54 pp.9-14 |
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