Stability Evaluation of a Broadband Multi-Stage Low Noise Amplifier using Nonlinear Analysis

Chun Chia Huang, Hong Yeh Chang, Chau Ching Chiong

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

1 Scopus citations

Abstract

In this paper, the stability evaluation of a broadband multi-stage low noise amplifier (LNA) is presented using nonlinear analysis. The demonstrated LNA consists of three common-source stages with resistance-capacitance feedback, and it is implemented in 0.15-μm GaAs pHEMT process. The linear inter-stage stability analysis and the nonlinear stability analysis are employed to predict the occurrence of low-frequency and microwave oscillations. The simulated results are demonstrated to eliminate instabilities in the broadband multi-stage LNA, especially for the low-and high-frequency bands. Moreover, the LNA features a measured 3-dB bandwidth from 4 to 16 GHz, a maximum small-signal gain of 28 dB, a minimum noise figure of 2 dB. The measured output 1-dB compression point is higher than-3 dBm. The demonstrated method for stability is suitable for the microwave linear and nonlinear circuits.

Original languageEnglish
Title of host publication2019 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2019 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728124964
DOIs
StatePublished - Aug 2019
Event2019 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2019 - Nanjing, China
Duration: 28 Aug 201930 Aug 2019

Publication series

Name2019 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2019 - Proceedings

Conference

Conference2019 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2019
Country/TerritoryChina
CityNanjing
Period28/08/1930/08/19

Keywords

  • autonomous circuit
  • broadband
  • GaAs
  • low noise amplifier
  • microwave and MMW
  • MMIC
  • pHEMT
  • stability

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