Inverse Active Load-Pull in an Inverse Doherty Amplifier

Thomas M. Hone*, Souheil Ben Smida, Kevin A. Morris, Mark A. Beach, Joe P. McGeehan, Jonathan Lees, Johannes Benedikt, Paul J. Tasker

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

1 Citation (Scopus)

Abstract

A dedicated inverse Doherty amplifier is presented in this paper using commercially available 10W GaN HEMT devices. Results show that an emulated 1W peaking amplifier and a 10W carrier amplifier can be used to create a highly efficient amplification architecture. Ideal inverse active load-pull is introduced theoretically with experimental results showing good agreement with the theory. A generic characterization scan of the inverse Doherty amplifier yields state of the art drain and power added efficiency in the output power back-off. A drain and power added efficiency of 60% and 50% are obtained at 10dB output power backoff respectively with a maximum output power of 41dBm at 2.1GHz.

Original languageEnglish
Title of host publication2013 IEEE TOPICAL CONFERENCE ON POWER AMPLIFIERS FOR WIRELESS AND RADIO APPLICATIONS (PAWR)
Place of PublicationNEW YORK
PublisherIEEE Computer Society
Pages4-6
Number of pages3
ISBN (Print)978-1-4673-2918-7
Publication statusPublished - 2013
Event7th IEEE Radio and Wireless Week (RWW) - Austin, United Kingdom
Duration: 20 Jan 201323 Jan 2013

Publication series

NameIEEE Topical Conference on Power Amplifiers for Wireless and Radio Applications
PublisherIEEE
ISSN (Print)2164-8751

Conference

Conference7th IEEE Radio and Wireless Week (RWW)
CountryUnited Kingdom
Period20/01/1323/01/13

Keywords

  • Digital Doherty
  • Dual-drive
  • Inverse active load-pull

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