Jiro Hirokawa
Fujitsu
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Publication
Featured researches published by Jiro Hirokawa.
european microwave conference | 2003
Hiroshi Nakano; Kinjiro Kosemura; Tomoko Hamada; Yasutake Hirachi; Jiro Hirokawa; Makoto Ando
Cost-effective 60 GHz modules were developed for home-link systems which needed the bit rate of several Gbps. The modules are composed of a packaged MMIC mounted on the printed circuit board and a post-wall planar antenna formed on the backside of the board. The antenna gain is 20 dBi. The board with the size of 75 × 32 × 1.2 mm3 is inserted into the card-edge connector to feed the IF signal and the DC power. The module can be characterized to have no mm-wave terminals. When the output power of the transmitter module ( Tx ) was 8 dBm at 61.0 GHz, the IF output power of the receiver module ( Rx ) PIFout was ¿37 dBm at the distance D = 10 m between Tx and Rx. This experiment suggests the capability of the transmission with the bandwidth of 2.5 GHz and the C/N of 25 dB in the home-link systems.
Archive | 1995
Masahiro Uematsu; Takashi Ojima; Nobuharu Takahashi; Naohisa Goto; Jiro Hirokawa; Makoto Ando
Archive | 1993
Makoto Ando; Naohisa Goto; Jiro Hirokawa; Takashi Oshima; Shinji Takahashi; Masahiro Uematsu; 真 安藤; 孝 尾島; 二郎 広川; 尚久 後藤; 正博 植松; 伸治 高橋
Antennas and Propagation, Tenth International Conference on (Conf. Publ. No. 436) | 1997
Makoto Ando; Jiro Hirokawa
Archive | 2002
Makoto Ando; Naohisa Goto; Kenkichi Hiraide; Jiro Hirokawa; 安藤 真; 平出 賢吉; 廣川 二郎; 後藤 尚久
電子情報通信学会技術研究報告. A・P, アンテナ・伝播 | 1997
Jiro Hirokawa; Makoto Ando
Archive | 2009
Makoto Ando; Yasutaka Hirachi; Jiro Hirokawa; Hiroshi Nakano; Ryosuke Suga; 洋 中野; 真 安藤; 康剛 平地; 二郎 廣川; 良介 須賀
電子情報通信学会技術研究報告. A・P, アンテナ・伝播 | 2007
Miroslav Samardzija; Jiro Hirokawa; Makoto Ando
Archive | 2018
Hirobumi Saito; Prilando Rizki Akbar; Budhaditya Pyne; Jiro Hirokawa; Koji Tanaka; Koichi Ijichi; Hiromi Watanabe; Makoto Mita
Archive | 2017
Prilando Rizki Akbar; Vinay Ravindra; Hiromi Watanabe; Budhaditya Pyne; Kouji Tanaka; Makoto Mita; Jiro Hirokawa; Kenji Ura; Koichi Ijichi; Hirobumi Saito; Seiko Shirasaka
