• DocumentCode
    2591249
  • Title

    Doherty power amplifier with asymmetrical drain voltages for enhanced efficiency at 8 dB backed-off output power

  • Author

    Kitahara, Tetsuro ; Yamamoto, Takayuki ; Hiura, Shinsaku

  • Author_Institution
    Toshiba Corporation, Yokohama, Japan
  • fYear
    2011
  • fDate
    5-10 June 2011
  • Firstpage
    1
  • Lastpage
    1
  • Abstract
    Summary form only given, as follows. In this paper, we present a high-efficiency 300 W Doherty power amplifier (DPA) that can improve the efficiency at an 8 dB backoff from its saturated output power (PSAT). To enhance the efficiency, asymmetrical drain voltages are supplied to a carrier amplifier and a peak amplifier in the DPA. Measurement results using a CW signal indicate a drain efficiency (Ed) of 50% at a PSAT of 55 dBm and a Ed of 48% at an 8 dB backoff from PSAT.
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Microwave Symposium Digest (MTT), 2011 IEEE MTT-S International
  • Conference_Location
    Baltimore, MD
  • ISSN
    0149-645X
  • Print_ISBN
    978-1-61284-754-2
  • Electronic_ISBN
    0149-645X
  • Type

    conf

  • DOI
    10.1109/MWSYM.2011.5973147
  • Filename
    5973147
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2591249