Kouji Tanaka
Japan Aerospace Exploration Agency
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Publication
Featured researches published by Kouji Tanaka.
asia-pacific microwave conference | 2006
Minoru Furukawa; Yoshiro Takahashi; Teruo Fujiwara; Shoichiro Mihara; Takashi Saito; Yutaro Kobayashi; Shigeo Kawasaki; Naoki Shinohara; Yoshiyuki Fujino; Kouji Tanaka; Susumu Sasaki
This paper presents a high-efficiency low-reradiation planar rectifying antenna (rectenna). The rectenna is composed of a high-gain cavity-backed circular patch antenna using novel coplanar feeding structure and a low-profile microstrip rectifying circuit. The cavity-backed antenna achieved the gain of 9.17dBi and the -20dB return loss bandwidth of approximately 1.4%. The rectifying circuit has a harmonics filter that suppresses the reradiated harmonics under -59 dBc. The RF-to-dc conversion efficiency of the rectenna element was measured as 71.4% with a 266mW input power. Over 13W DC output power was demonstrated using the 52- element triangular array.
Journal of The Japan Institute of Metals | 1993
Kouji Tanaka; Takashi Saito; Yoshio Shimura; Kazuhiko Mori; Minoru Kawasaki; Mototsugu Koyama; Hiroyuki Murase
Transactions of The Japan Society for Aeronautical and Space Sciences, Space Technology Japan | 2010
Yoshiki Yamagiwa; Atsushi Kanbe; Masaru Wakatsuki; Kouji Tanaka; Makoto Sumino; Takeo Watanabe; Hironori Sahara; Hironori A. Fujii
Archive | 2003
Kouji Tanaka; Takashi Saito
Bulletin of GTSJ | 2001
Kazuaki Nishino; Hiroyuki Kawaura; Kouji Tanaka; Toshio Horie; Takashi Saito; Hiroshi Uchida
Materia Japan | 2018
Tadashi Oshima; Hajime Kato; Kouji Tanaka; Minoru Kawasaki; Natsuki Sugiyama; Hironori Aoyama
Annual Report of National Institute for Fusion Science | 2015
H. "Yoneda; Toshihiko Saito; A. Ando; Miho Kikuchi; M. Hasuo; T. Miyoshi; H. Idei; N. Miyato; N. Tamura; Akira Okamoto; T. Higashiguchi; Naoko Yokoi; Kouji Tanaka; Y. Uesugi; M. , Ogura, K. Furukawa; K. Ida; Tadashi Nozaki; K. Terashima; A. Fukuyama; K." Nagaoka
Archive | 2004
Kazuhiko Mori; Minoru Kawasaki; Shin Yoshida; Hiroyuki Murase; Takashi Saito; Kouji Tanaka; Yoshio Shimura
Archive | 1998
Kouji Tanaka; Takashi Saito; Tadashi Oshima
Archive | 1998
Kouji Tanaka; Takashi Saito; Tadashi Oshima
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