A 6.5-12 GHz balanced variable gain low-noise amplifier with frequency-selective non-foster gain equalization technique

Huiyan Gao, Nayu Li, Min Li, Shaogang Wang, Zijiang Zhang, Yen Cheng Kuan, Xiaopeng Yu, Qun Jane Gu*, Zhiwei Xu

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper presents a wideband balanced variable-gain low-noise amplifier (VGLNA) implemented in a 55-nm CMOS process. A frequency-selective non-foster gain equalization technique is proposed to compensate the gain variation of interstage dual-resonant tanks. This VGLNA leverages current-steering technique to realize a phase-invariant 18-dB tunable gain range with a measured input 1-dB gain compression point (IP1dB) at 9 GHz from -12.2 dBm to -5 dBm. The LNA achieves a maximum power gain of 20.2 dB with ±0.5 dB gain variation and a minimum noise figure (NF) of 3.26 dB from 6.5 to 12 GHz. Owing to lumped Lange couplers, the input and output matching are both better than -14 dB. This chip occupies 1.44 mm × 0.68 mm area without pads and consumes 75 mW.

Original languageEnglish
Title of host publicationIMS 2020 - 2020 IEEE/MTT-S International Microwave Symposium
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages321-324
Number of pages4
ISBN (Electronic)9781728168159
DOIs
StatePublished - Aug 2020
Event2020 IEEE/MTT-S International Microwave Symposium, IMS 2020 - Virtual, Los Angeles, United States
Duration: 4 Aug 20206 Aug 2020

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
Volume2020-August
ISSN (Print)0149-645X

Conference

Conference2020 IEEE/MTT-S International Microwave Symposium, IMS 2020
CountryUnited States
CityVirtual, Los Angeles
Period4/08/206/08/20

Keywords

  • Balanced low-noise amplifier
  • Non-foster gain equalization technique
  • Transformer
  • Variable-gain

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