Dynamic Impedance Adjustment for Millimeter-Wave CMOS Low Noise Amplifiers Using a Current Injection Technique

Soroush Moallemi, Sumit Bhardwaj, Jennifer Kitchen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This work presents a novel technique for adjusting the input impedance of a low noise amplifier (LNA) using current injection. The proposed technique can significantly improve the input return loss under varying antenna impedance and/or process variation, with minimal effect on the amplifier's nominal performance. The simulation results show approximately 6dB input return loss improvement over the designed frequency range. The proposed current injection method is verified through the design of a single-stage LNA in a 28nm TSMC bulk CMOS technology. The LNA uses a 900mV supply voltage and operates from 17.5GHz to 20.5GHz. Nominally, the LNA exhibits 1.25dB of noise figure, 12dB of power gain, and dissipates approximately 14mW of power. Within this work, the LNA maintains an input return loss below -10dB under process (3σ), voltage (+10%), temperature (-40°C), and antenna impedance (45Ω) variations, without requiring stringent nominal design specifications, tuning, or trimming.

Original languageEnglish (US)
Title of host publicationProceedings of the 2019 Texas Symposium on Wireless and Microwave Circuits and Systems, WMCS 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728118031
DOIs
StatePublished - Mar 2019
Event2019 Texas Symposium on Wireless and Microwave Circuits and Systems, WMCS 2019 - Waco, United States
Duration: Mar 28 2019Mar 29 2019

Publication series

NameProceedings of the 2019 Texas Symposium on Wireless and Microwave Circuits and Systems, WMCS 2019

Conference

Conference2019 Texas Symposium on Wireless and Microwave Circuits and Systems, WMCS 2019
CountryUnited States
CityWaco
Period3/28/193/29/19

Keywords

  • CMOS integrated circuits
  • RF
  • amplifier
  • current-injection
  • low-noise amplifiers
  • noise-figure
  • wideband

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Hardware and Architecture
  • Electrical and Electronic Engineering
  • Instrumentation

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    Moallemi, S., Bhardwaj, S., & Kitchen, J. (2019). Dynamic Impedance Adjustment for Millimeter-Wave CMOS Low Noise Amplifiers Using a Current Injection Technique. In Proceedings of the 2019 Texas Symposium on Wireless and Microwave Circuits and Systems, WMCS 2019 [8732554] (Proceedings of the 2019 Texas Symposium on Wireless and Microwave Circuits and Systems, WMCS 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/WMCaS.2019.8732554