Atsushi Murase
NTT DoCoMo
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Publication
Featured researches published by Atsushi Murase.
radio and wireless symposium | 2010
Atsushi Fukuda; Kunihiro Kawai; Takayuki Furuta; Hiroshi Okazaki; Sinya Oka; Shoichi Narahashi; Atsushi Murase
This paper presents a highly efficient multi-band heterojunction bipolar transistor power amplifier (PA) employing reconfigurable matching networks (MNs). The MN consists of field effect transistor switches and achieves the desired matching condition in the target frequency band by controlling the on/off status of switches. The fabricated reconfigurable PA has 3-stage and operates in 9 bands from 0.7 to 2.5 GHz, i.e., 0.7, 0.8, 0.9, 1.4, 1.7, 1.8, 1.9, 2.3, and 2.5-GHz bands, with over a 30 dB gain. It also achieves an output power of greater than 34 dBm and a power added efficiency of over 40% at the supply voltage of 3.5 V in each operating band.
Archive | 2002
Chie Noda; Atsushi Murase; Hidetoshi Ishikawa
Archive | 1997
Ichiro Okajima; Akihiro Maebara; Atsushi Murase; Katsumi Kobayashi; Tadao Takami
Archive | 2001
和彦 ▲高▼橋; Akihiro Azuma; Masahiro Furuse; Takao Hiramatsu; Atsushi Murase; Chie Noda; Kazuhiko Takahashi; Makoto Ueda; Tatsuaki Wakabayashi; 誠 上田; 正浩 古瀬; 孝朗 平松; 淳 村瀬; 明洋 東; 達明 若林; 千恵 野田
Archive | 2003
Philipp Hofmann; Christian Prehofer; Atsushi Murase
Archive | 2001
Hiroyuki Yokosuka-shi Itazu; Atsushi Murase; Shuji Urayasu-shi Tachibana; Shogo Ito
Archive | 2001
Hiroyaki Itazu; Shogo Ito; Atsushi Murase; Shuji Urayasu-shi Tachibana
Archive | 2012
Motonari Kobayashi; Ichiro Okajima; Tomohiro Nagata; Atsushi Murase
Archive | 2002
Hidetoshi Ishikawa; Atsushi Murase; Chie Noda
Archive | 2002
Atsushi Murase
