• DocumentCode
    1270482
  • Title

    Maximizing efficiency and linearitry

  • Author

    Bousnina, Sami

  • Author_Institution
    PolyGrames Res. Center, Ecole Polytech. de Montreal, Montreal, QC, Canada
  • Volume
    10
  • Issue
    5
  • fYear
    2009
  • fDate
    8/1/2009 12:00:00 AM
  • Firstpage
    99
  • Lastpage
    107
  • Abstract
    In, this paper, a detailed analysis of the optimum performance of various Doherty amplifier configurations in terms of output power, efficiency, and output power backoff ensuring a near-peak efficiency was presented. Closed-form design equations for the determination of the load RL and impedance Zc were derived for each configuration. An experimental realization at 1.9 GHz of a Doherty amplifier was presented. An efficiency of 43% was measured at 4 dB backoff from P1dB of 27 dBm.
  • Keywords
    UHF power amplifiers; Doherty amplifier configurations; closed-form design equations; efficiency; frequency 1.9 GHz; impedance; output power; output power backoff; Circuit faults; Digital modulation; Impedance; Linearity; Power amplifiers; Power generation; Power supplies; Radiofrequency amplifiers; Region 2; Satellite communication;
  • fLanguage
    English
  • Journal_Title
    Microwave Magazine, IEEE
  • Publisher
    ieee
  • ISSN
    1527-3342
  • Type

    jour

  • DOI
    10.1109/MMM.2009.932837
  • Filename
    5185530
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1270482