A broadband class AB power amplifier with second harmonic injection

Pouria Pazhouhesh, Jennifer Kitchen

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

Abstract

This work presents a broadband class AB push-pull power amplifier with second harmonic injection, where the second harmonic is injected through the center tap of an even harmonic trap to improve the class AB push-pull efficiency over an octave of bandwidth. The PA is designed and simulated in a 65 nm CMOS technology, and exhibits greater than 22.7% PAE from 2 GHz to 6.7 GHz at an average saturated output power of 22 dBm over the entire band. At saturated output power, the maximum PAE improves by 2.5% compared to the conventional push-pull class AB. The PA's gain is 12 dB, with input return loss better than -10 dB from 2 to 6.7 GHz, resulting in a 108% fractional bandwidth.

Original languageEnglish (US)
Title of host publicationProceedings of the 2020 IEEE Dallas Circuits and Systems Conference, DCAS 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728185101
DOIs
StatePublished - Nov 15 2020
Event14th IEEE Dallas Circuits and Systems Conference, DCAS 2020 - Virtual, Richardson, United States
Duration: Nov 15 2020Nov 16 2020

Publication series

NameProceedings of the 2020 IEEE Dallas Circuits and Systems Conference, DCAS 2020

Conference

Conference14th IEEE Dallas Circuits and Systems Conference, DCAS 2020
CountryUnited States
CityVirtual, Richardson
Period11/15/2011/16/20

Keywords

  • Broadband
  • Class AB
  • Even harmonic trap
  • Power Amplifier
  • Push-pull
  • Second harmonic injection

ASJC Scopus subject areas

  • Artificial Intelligence
  • Hardware and Architecture
  • Signal Processing
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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