Design of a 100watt high-efficiency power amplifier for the 10-500MHz band

Jaeyong Cho, Kyunhoon Lim, Sungchul You, Minchul Seo, Kyungwon Kim, Jaewoo Sim, Myungkyu Park, Youngoo Yang

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

15 Scopus citations

Abstract

This paper presents a design for a high-efficiency power amplifier with an output power of more than 100W, and an ultra-broad bandwidth from 10 to 500MHz. The amplifier has a 4-way push-pull configuration using Guanella's 1:1 transmission line transformer. A negative feedback network is adopted to make the power gain flat enough over the operating bandwidth. The implemented power amplifier exhibits a power gain of 29.2±1.8dB from 10 to 500MHz band with its power-added efficiency (PAE) being greater than 43%, and the second-and third-harmonic distortions are below -29dBc and -9.78dBc, respectively, at an output power of 100W over the entire frequency band.

Original languageEnglish
Title of host publicationAPMC 2009 - Asia Pacific Microwave Conference 2009
Pages285-288
Number of pages4
DOIs
StatePublished - 2009
EventAsia Pacific Microwave Conference 2009, APMC 2009 - Singapore, Singapore
Duration: 7 Dec 200910 Dec 2009

Publication series

NameAPMC 2009 - Asia Pacific Microwave Conference 2009

Conference

ConferenceAsia Pacific Microwave Conference 2009, APMC 2009
Country/TerritorySingapore
CitySingapore
Period7/12/0910/12/09

Keywords

  • Broadband power amplifier
  • Feedback
  • Push-pull
  • Transmission line transformer

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