Compact 141-GHz Differential Amplifier with 20-dB Peak Gain and 22-GHz 3-dB Bandwidth

Special Section on Microwave and Millimeter-Wave Technology

Shinsuke HARA, Kosuke KATAYAMA, Kyoya TAKANO, Issei WATANABE, Norihiko SEKINE, Akifumi KASAMATSU, Takeshi YOSHIDA, Shuhei AMAKAWA, Minoru FUJISHIMA

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Keywords: millimeter wave circuits, CMOS process, amplifiers, frequency estimation

JOURNAL RESTRICTED ACCESS

2016 Volume E99.C Issue 10 Pages 1156-1163

DOI https://doi.org/10.1587/transele.E99.C.1156

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Abstract

This paper presents a wideband differential amplifier operating at 141GHz in 40-nm CMOS. It is composed of five differential common source stages with cross-coupled capacitors. A small-signal gain of 20dB and a 3-dB bandwidth of 22GHz are achieved. It consumes 75mW from a 0.94-V voltage supply. The die area with balun and pads is 945×842µm² and the size of the core not including input/output matching networks is 201×284µm². The small core area is made possible by using a refined “fishbone” layout technique.

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