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Itsuo Watanabe

National Institute of Information and Communications Technology

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international symposium on radio-frequency integration technology | 2015

Compact 138-GHz amplifier with 18-dB peak gain and 27-GHz 3-dB bandwidth

Sinsuke Hara; Itsuo Watanabe; Norihiko Sekine; Akifumi Kasamatsu; Kosuke Katayama; K. Takano T. Yoshida; Shuhei Amakawa; Minoru Fujishima

This paper presents a wideband differential amplifier operating at 138 GHz in 40-nm CMOS. It is composed of five differential common source stages with cross-coupled capacitors. A small-signal gain of 18 dB at 138 GHz and a 3-dB bandwidth of 27 GHz are achieved. It consumes 75 mW from a 0.94-V voltage supply. The die area with balun and pads is 945 × 842 μm2 and the core size not including input/output matching networks is 201 × 284 μm2. The small core area is realized by using a refined fishbone layout technique.

Archive | 2011

MOTOR ROTOR, AND MOTOR STRUCTURE INTEGRATED WITH MOTOR HOUSING

Kazunori Koizumi; Masayuki Maruyama; Itsuo Watanabe; 正幸 丸山; 和則 小泉; 逸男 渡辺

Archive | 2007

ROLLING BEARING DEVICE HAVING DIMENSION DIRECTION PLANE ARRANGEMENT STRUCTURE OF COMPOSITE RESOLVER

Masaki Kuwabara; Itsuo Watanabe; Kazuhiro Yoshida; 一弘 吉田; 昌樹 桑原; 逸男 渡辺

Archive | 2015

Stator, motor, and industrial machine

裕介 太田; Yusuke Ota; 片岡 隆; Takashi Kataoka; 隆 片岡; 俊文 田口; Toshibumi Taguchi; 逸男 渡辺; Itsuo Watanabe

Archive | 2013

モータコア、モータ、搬送装置及びモータコアの製造方法

Kazunori Koizumi; 和則 小泉; Itsuo Watanabe; 逸男 渡辺; Masayuki Maruyama; 正幸 丸山; Yusuke Ota; 裕介 太田

Archive | 2012

Negative-acting electromagnetic brake and control method therefor and controller, drive unit

Yusuke Ota; 裕介 太田; Kazunori Koizumi; 和則 小泉; Masayuki Maruyama; 正幸 丸山; Itsuo Watanabe; 逸男 渡辺

Archive | 2011

Roller bearing device and thin-type motor equipped with the same

Masaki Kuwabara; Itsuo Watanabe; Kazuhiro Yoshida; 一弘 吉田; 昌樹 桑原; 逸男 渡辺

Archive | 2008

Roller bearing comprising rotational sensor of in-contact-angle arrangement structure, roller bearing comprising resolver of in-contact-angle arrangement structure, roller bearing comprising resolver of in-bearing-width arrangement structure, and roller bearing comprising combination bearing of in-contact-angle arrangement structure

Masaki Kuwabara; Itsuo Watanabe; Kazuhiro Yoshida; 一弘 吉田; 昌樹 桑原; 逸男 渡辺

Archive | 2008

回転センサの接触角内配置構造を有する転がり軸受装置、レゾルバの接触角内配置構造を有する転がり軸受装置、レゾルバの軸受幅内配置構造を有する転がり軸受装置および組合せ軸受の接触角内配置構造を有する転がり軸受装置

Masaki Kuwabara; Itsuo Watanabe; Kazuhiro Yoshida; 一弘 吉田; 昌樹 桑原; 逸男 渡辺

Archive | 2007

Rolling bearing and electric motor

Kenichi Fukuyama; Osamu Nagami; Itsuo Watanabe; 修 永見; 逸男 渡辺; 健一 福山

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Kazunori Koizumi

NSK Ltd.

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Masayuki Maruyama

NSK Ltd.

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Yusuke Ota

NSK Ltd.

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Akifumi Kasamatsu

National Institute of Information and Communications Technology

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K. Takano T. Yoshida

Hiroshima University

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Kosuke Katayama

Hiroshima University

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Minoru Fujishima

Hiroshima University

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Norihiko Sekine

National Institute of Information and Communications Technology

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Shuhei Amakawa

Hiroshima University

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Sinsuke Hara

National Institute of Information and Communications Technology

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