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http://dx.doi.org/10.5573/JSTS.2016.16.6.754

A Transformer Feedback CMOS LNA for UWB Application  

Jeon, Ji Yeon (Department of Electronics Eng., Kwangwoon University)
Kim, Sang Gyun (Department of Electronics Eng., Kwangwoon University)
Jung, Seung Hwan (Silicon R&D, Corp.)
Kim, In Bok (LIGNEX1 CO, LTD.)
Eo, Yun Seong (Department of Electronics Eng., Kwangwoon University)
Publication Information
JSTS:Journal of Semiconductor Technology and Science / v.16, no.6, 2016 , pp. 754-759 More about this Journal
Abstract
A transformer feedback low-noise amplifier (LNA) is implemented in a standard $0.18{\mu}m$ CMOS process, which exploits drain-to-gate transformer feedback technique for wideband input matching and operates across entire 3~5 GHz ultra-wideband (UWB). The proposed LNA achieves power gain above 9.5 dB, input return loss less than 15.0 dB, and noise figure below 4.8 dB, while consuming 8.1 mW from a 1.8-V supply. To the authors' knowledge, drain-to-gate transformer feedback for wideband input matching cascode LNA is the first adopted technique for UWB application.
Keywords
Transformer feedback; wideband input matching; LNA; CMOS; UWB;
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