zenichi yamamoto - Papers

Initial performance of the radio occultation experiment in the Venus orbiter mission Akatsuki

IMAMURA Takeshi, ANDO Hiroki, TELLMANN Silvia, PAETZOLD Maertin, HAEUSLER Bernd, YAMAZAKI Atsushi, SATO Takao M., NOGUCHI Katsuyuki, FUTAANA Yoshifumi, OSCHLISNIOK Janusz …

Earth, Planets and Space (Web), 69(Oct), 2017

Evaluation of RF Characteristics Affected by Operational Conditions and Space Environmental Testing of X-band SSPA Using COTS GaN HEMT

KOBAYASHI Yuta, YAMAMOTO Zenichi, KAWASAKI Shigeo

AEROSPACE TECHNOLOGY JAPAN, THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, 12 1-8, 2013

S-Band GaN on Si Based 1kW-Class SSPA System for Space Wireless Applications

KOBAYASHI Yuta, YOSHIDA Satoshi, YAMAMOTO Zen-ichi, KAWASAKI Shigeo

IEICE Transactions on Electronics (Institute of Electronics, Information and Communication Engineers), E96-C(10) 1245-1253, 2013

GaN HEMT Based Rectifier for Spacecraft Health Monitoring System Using Microwave Wireless Power Transfer

Yuta Kobayashi, Shuntaro Tashiro, Takumasa Noji, Goh Fukuda, Satoshi Yoshida, Yusuke Maru, Yoshihiro Naruo, Zenichi Yamamoto, Shigeo Kawasaki

2012 ASIA-PACIFIC MICROWAVE CONFERENCE (APMC 2012), 391-393, 2012

Radio occultation experiment of the Venus atmosphere and ionosphere with the Venus orbiter Akatsuki

Takeshi Imamura, Tomoaki Toda, Atsushi Tomiki, Daichi Hirahara, Tomoko Hayashiyama, Nanako Mochizuki, Zen-ichi Yamamoto, Takumi Abe, Takahiro Iwata, Hirotomo Noda …

EARTH PLANETS AND SPACE, 63(6) 493-501, 2011 Peer-reviewed

Radio occultation experiment of the Venus atmosphere and ionosphere with the Venus orbiter Akatsuki

IMAMURA Takeshi, TODA Tomoaki, TOMIKI Atsushi, HIRAHARA Daichi, HAYASHIYAMA Tomoko, MOCHIZUKI Nanako, YAMAMOTO Zen-ichi, ABE Takumi, IWATA Takahiro, NODA Hirotomo …

Earth, Planets and Space, 63(6), 2011

Ground Compatibility Tests for Gravity Measurement of SELENE: Accuracies of Two- and Four-Way Doppler and Range Measurements

Noriyuki Namiki, Takahiro Iwata, Nobuyuki Kawano, Fumio Fuke, Naoki Tateno, Kazuyoshi Asari, Hirotomo Noda, Yusuke Kono, Hideo Hanada, Yukihiro Yahagi …

Space Science Reviews, 154(1-4) 103-121, Jul, 2010 Peer-reviewed

Radio Occultation Observation of the Lunar Ionosphere

IMAMURA Takeshi, IWATA Takahiro, YAMAMOTO Zen-ichi, MOCHIZUKI Nanako, KONO Yusuke, MATSUMOTO Koji, LIU Qinghui, NODA Hirotomo, HANADA Hideo, OYAMA Koh-ichiro …

Journal of the Geodetic Society of Japan, 55(2) 307-314, Jul 25, 2009

B-2-27 Evaluation of Wave Attenuation and Phase Disturbance on Radio Communication by M-V Rocket Exhaust

Sakai Tomohiko, Yamamoto Zenichi, Ohshima Tsutomu, Kato Teruo

Proceedings of the IEICE General Conference, 269-269, 2008

B-2-53 Closed Loop Experiments of Regenerative Ranging with Ground System and Space Transponder for Deep Space Missions

Nagae Tomoko, Toda Tomoaki, Saito Hirobumi, Yamamoto Zen-ichi, Tomita Hideho, Ishimaru Hajime

Proceedings of the IEICE General Conference, 2007(1) 301-301, Mar 7, 2007

B-2-3 Development of Ground Ranging System for Deep Space Missions

Nagae Tomoko, Toda Tomoaki, Saito Hirobumi, Ikenaga Toshinori, Yamamoto Zen-ichi, Tomita Hideho, Ishimaru Hajime

Proceedings of the IEICE General Conference, 241-241, 2006

Deep space communication technologies in ISAS for venus and mercury mission

Toda, Tomoaki, Saito, Hirobumi, Shinkai, Kenji, Yamamoto, Zen-Ichi

International Astronautical Federation - 55th International Astronautical Congress 2004, 8, 2004

The Influence of the Solar Plasma to Deep Space Telecommunication Link

Yamamoto Zenichi, Imamura Takeshi, Fuke Fumio, Hagino Shinji, Murata Shigeru

Proceedings of the IEICE General Conference, 2003(1) 14-14, Mar 3, 2003

Miniature C Band Radar Transponder for Surrounding Rockets

Kamata Yukio, Ishimaru Hajime, Yamamoto Zenichi, Nakajima Takesi

Proceedings of the IEICE General Conference, 2003(1) 312-312, Mar 3, 2003

Development of X Band Transponder for Scientific Satellite

Yamamoto Zenichi, Fuke Fumio, Hamamoto Masahide, Suzuki Jun

Proceedings of the IEICE General Conference, 2003(1) 351-351, Mar 3, 2003

Uplink Frequency Control for the Space VLBI Mission

SUZUKI Kazumasa, KAWAGUCHI Noriyuki, KASUGA Takashi, HIROSAWA Haruto, YAMAMOTO Zenichi

The Transactions of the Institute of Electronics,Information and Communication Engineers B, 84(9) 1625-1632, Sep 1, 2001

The 4-way radio relay system for the lunar gravity measurement by SELENE

Iwata T., Kawano N, Takano T., Yamamoto Z., Fuke F.

Proceedings of the Society Conference of IEICE, 2000(1) 163-163, Sep 7, 2000

Onboard X-band QPSK/PM modulator

Yamamoto Zenichi, Huke Humio, Yamagishi Tatsuo, Ohara Kazuya

Proceedings of the Society Conference of IEICE, 1999(1) 423-423, Aug 16, 1999

Deep Space Communication Technologies : Communications with Deep Spacecraft

YAMAMOTO Zen-ichi

The Journal of the Institute of Electronics,Information and Communication Engineers, 82(8) 883-885, Aug, 1999

S/X/Ka-band φ 34m Antenna Feed by Beam-waveguides

HIROSAWA H., YAMAMOTO Z., ICHIKAWA M., YOKOYAMA K., NAGAYA N., MIZUNO T., SATOH H., KONISHI Y., MATSUMOTO S.

Proceedings of the Society Conference of IEICE, 123-123, 1999