Modeling and design of high-efficiency power amplifiers fed by limited power sources

Arturo Fajardo Jaimes, Fernando Rangel De Sousa

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

2 Scopus citations

Abstract

Recently the non-electromagnetic energy sources and wireless power transfer (WPT) techniques have been used to obtain electromagnetic (EM) energy sources for providing energy autonomy to electric devices when the energy in the environment is insufficient. Typically, this type of systems are composed by a harvester, a DC/RF converter, a WPT interface and a load. Further, in the power stage of the DC/RF converter the energy flow is processed using a power amplifier (PA). This paper proposes a design methodology for a generic PA fed by a limited power source. This methodology extracts the maximum available power of the EPS with the maximum PA efficiency using impedance matching and a novel PA modeling based on its impedance ports (DC and AC). Moreover, models of class-A PA and class-D PA were developed as examples. Furthermore, a Class-A PA was designed using its impedance ports model and the proposed methodology as a proof of concept. The results reflect that the designed PA extracts the maximum available power of the source with its maximum efficiency.

Original languageEnglish
Title of host publicationProceedings - SBCCI 2016
Subtitle of host publication29th Symposium on Integrated Circuits and Systems Design: Chip on the Mountains
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509027361
DOIs
StatePublished - 27 Oct 2016
Event29th Symposium on Integrated Circuits and Systems Design, SBCCI 2016 - Belo Horizonte, Minas Gerais, Brazil
Duration: 29 Aug 201603 Sep 2016

Publication series

NameProceedings - SBCCI 2016: 29th Symposium on Integrated Circuits and Systems Design: Chip on the Mountains

Conference

Conference29th Symposium on Integrated Circuits and Systems Design, SBCCI 2016
Country/TerritoryBrazil
CityBelo Horizonte, Minas Gerais
Period29/08/1603/09/16

Keywords

  • Class-A power amplifier
  • class-D power amplifier
  • efficiency
  • power amplifier modeling
  • wireless power transfer

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