2-GHz Class-E Power Amplifier Using a Compact Redundancy-Free Harmonic Tuning Circuit

Shinichi Tanaka, Hirotaka Asami

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

Abstract

A novel harmonic tuning circuit (HTC) for Class-E power amplifier is presented. Conventional HTCs unavoidably use long transmission lines (TLs) to tune the 2nd and 3rd harmonics simultaneously, resulting in increased circuit size and decreased bandwidth. Such redundant circuit configuration arises from the characteristics of the electromagnetic waves in microstrip lines. It is shown that, using two CRLH TL stubs, the HTC can be designed without redundancy and thus with significantly reduced circuit size. The HTC was applied to a 2-GHz GaN HEMT Class-E power amplifier, demonstrating output power of 38.6 dBm, drain efficiency of 78.5% and PAE of 74.0%.

Original languageEnglish
Title of host publication2020 50th European Microwave Conference, EuMC 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages13-16
Number of pages4
ISBN (Electronic)9782874870590
DOIs
Publication statusPublished - 2021 Jan 12
Event50th European Microwave Conference, EuMC 2020 - Utrecht, Netherlands
Duration: 2021 Jan 122021 Jan 14

Publication series

Name2020 50th European Microwave Conference, EuMC 2020

Conference

Conference50th European Microwave Conference, EuMC 2020
CountryNetherlands
CityUtrecht
Period21/1/1221/1/14

Keywords

  • Class-E
  • Class-F
  • composite right-/left-handed transmission lines
  • harmonic tuning
  • power amplifiers
  • power-added efficiency

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Instrumentation

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