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

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

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 publication 2013 IEEE Topical Conference on Power Amplifiers for Wireless and Radio Applications
PublisherIEEE
Number of pages3
ISBN (Electronic)978-1-4673-2918-7
ISBN (Print)978-1-4673-2915-6
DOIs
Publication statusPublished - 2013

Keywords

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

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