• DocumentCode
    2867171
  • Title

    Efficiency and linearity of power amplifiers with external harmonic injection

  • Author

    Dani, Asmita ; Roberg, Michael ; Popovic, Zoya

  • Author_Institution
    Department of Electrical, Computer and Energy Engineering, University of Colorado at Boulder, 80309-0425, USA
  • fYear
    2012
  • fDate
    17-22 June 2012
  • Firstpage
    1
  • Lastpage
    3
  • Abstract
    This paper discusses a method for improving the efficiency of linear power amplifiers by externally injecting power into the output at the second harmonic frequency. An experimental proof-of-concept PA based on class-A/AB mode with a 10-W GaN pHEMT at 2.45GHz is presented, and its efficiency improved from 58% to 75% with −6.5 dBc injected 2nd harmonic power. Two-tone measurements confirm improved linearity with simultaneous increase in efficiency, accompanied by gain compression at higher input power.
  • Keywords
    Harmonic analysis; Linearity; Microwave amplifiers; Power amplifiers; Power generation; Power measurement; Power system harmonics; GaN pHEMT; high-efficiency; nonlinear analysis; power amplifier;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Microwave Symposium Digest (MTT), 2012 IEEE MTT-S International
  • Conference_Location
    Montreal, QC, Canada
  • ISSN
    0149-645X
  • Print_ISBN
    978-1-4673-1085-7
  • Electronic_ISBN
    0149-645X
  • Type

    conf

  • DOI
    10.1109/MWSYM.2012.6259620
  • Filename
    6259620
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2867171