High bandwidth investigations of a baseband linearization approach formulated in the envelope domain under modulated stimulus

F. L. Ogboi, P. J. Tasker, M. Akmal, J. Lees, J. Benedikt, S. Bensmida, K. Morris, M. Beach, J. McGeehan

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

1 Citation (Scopus)

Abstract

Baseband injection provides a useful approach for use in linearizing power amplifiers. The challenge is the determination of the required baseband signal. In [6] a generalized formulation quantifying the baseband voltage signal, injected at the output bias port, to linearize the device behavior was introduced. This envelope domain based solution requires the determination of only a small number of linearizing coefficients. More importantly these coefficients should be stimulus, hence bandwidth independent. This property has been experimentally investigated using a 10W Cree GaN HEMT device under a 3-tone modulated stimulus at 1.5dB of compression. It will be shown that the linearization coefficients were invariant when varying the modulation bandwidth from 2MHz to 20MHz.

Original languageEnglish
Title of host publicationEuropean Microwave Week 2014: Connecting the Future, EuMW 2014 - Conference Proceedings; EuMC 2014: 44th European Microwave Conference
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1305-1308
Number of pages4
ISBN (Print)9782874870354
DOIs
Publication statusPublished - 15 Dec 2014
Event2014 44th European Microwave Conference, EuMC 2014 - Held as Part of the 17th European Microwave Week, EuMW 2014 - Rome, Italy
Duration: 6 Oct 20149 Oct 2014

Conference

Conference2014 44th European Microwave Conference, EuMC 2014 - Held as Part of the 17th European Microwave Week, EuMW 2014
CountryItaly
CityRome
Period6/10/149/10/14

Keywords

  • bandwidth
  • distortion
  • independence
  • modulation

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