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Exploring the design space for broadband pas using the novel "continuous inverse class-F mode"

  • V. Carrubba
  • , A. L. Clarke
  • , M. Akmal
  • , Z. Yusoff
  • , J. Lees
  • , J. Benedikt
  • , S. C. Cripps
  • , P. J. Tasker
  • Cardiff University

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

69 Scopus citations

Abstract

This paper presents a novel formulation for the inverse class-F mode of operation, termed the "continuous inverse class-F mode", resulting in an extended or continuous set of allowed current waveforms. In comparison to the classical inverse class-F mode, this approach provides a much wider design space for the realization of broadband power amplifiers, where output performance can be maintained through the proper termination of harmonic current components over bandwidth. By varying simultaneously the susceptance of fundamental and second harmonic terminations, it will be shown how drain efficiency and output power can be maintained at constant high levels over significant bandwidth. For the validation of this new theory, measurements have been carried out on GaAs pHEMT transistor at 0.9GHz and at a drain voltage of 4V.

Original languageEnglish
Title of host publicationEuropean Microwave Week 2011
Subtitle of host publication"Wave to the Future", EuMW 2011, Conference Proceedings - 41st European Microwave Conference, EuMC 2011
Pages333-336
Number of pages4
StatePublished - 2011
Externally publishedYes
Event14th European Microwave Week 2011: "Wave to the Future", EuMW 2011 - 41st EuropeanMicrowave Conference, EuMC 2011 - Manchester, United Kingdom
Duration: 10 Oct 201113 Oct 2011

Publication series

NameEuropean Microwave Week 2011: "Wave to the Future", EuMW 2011, Conference Proceedings - 41st European Microwave Conference, EuMC 2011

Conference

Conference14th European Microwave Week 2011: "Wave to the Future", EuMW 2011 - 41st EuropeanMicrowave Conference, EuMC 2011
Country/TerritoryUnited Kingdom
CityManchester
Period10/10/1113/10/11

Keywords

  • broadband
  • high efficiency
  • inverse class-F mode
  • microwave measurements
  • power amplifiers

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