A 13.56 MHz high-efficiency current mode class-D amplifier using a transmission-line transformer and harmonic filter

Mincheol Seo, Jeongbae Jeon, Inoh Jung, Youngoo Yang

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

6 Scopus citations

Abstract

This paper presents a high-efficiency current mode class-D (CMCD) amplifier using a Guanella's 11 transmission-line transformer and a harmonic filtering technique. Low second and third harmonic levels are achieved by the harmonic filtering technique used in the output matching network. The implemented CMCD amplifier exhibited a power gain of 13.4 dB and a high PAE of 84.6 % at an output power of 44.4 dBm using a 13.56 MHz input CW signal. The second and third harmonic distortion levels were measured at -50.3 dBc and -46.5 dBc, respectively, at the same power level.

Original languageEnglish
Title of host publicationAsia-Pacific Microwave Conference Proceedings, APMC 2011
Pages1262-1265
Number of pages4
StatePublished - 2011
EventAsia-Pacific Microwave Conference, APMC 2011 - Melbourne, VIC, Australia
Duration: 5 Dec 20118 Dec 2011

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC

Conference

ConferenceAsia-Pacific Microwave Conference, APMC 2011
Country/TerritoryAustralia
CityMelbourne, VIC
Period5/12/118/12/11

Keywords

  • current mode class-D amplifier
  • harmonic filter
  • power amplifier
  • transmission-line transformer

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