• DocumentCode
    34624
  • Title

    An RF–DC Converter with Wide-Dynamic-Range Input Matching for Power Recovery Applications

  • Author

    Abdelhalem, Sherif H. ; Gudem, Prasad S. ; Larson, Lawrence E.

  • Author_Institution
    Univ. of California, San Diego, La Jolla, CA, USA
  • Volume
    60
  • Issue
    6
  • fYear
    2013
  • fDate
    Jun-13
  • Firstpage
    336
  • Lastpage
    340
  • Abstract
    An improved RF-dc converter based on a class-E rectifier with wide-dynamic-range input matching is presented. The input impedance is controlled by two varactor diodes to compensate for impedance changes with RF input power and dc loading conditions. The RF-dc converter achieved a peak efficiency of 60% and an S11 less than - 20 dB over an input RF power range of 12 dB and an operating battery voltage of 2.5-4.2 V at 800 MHz. An analytical model for input impedance and efficiency was developed and shown to match simulation and measurement results.
  • Keywords
    UHF diodes; convertors; rectifiers; varactors; class-E rectifier; efficiency 60 percent; frequency 800 MHz; improved RF-DC converter; power recovery applications; varactor diodes; voltage 2.5 V to 4.2 V; wide-dynamic-range input matching; Class-E rectifier; RF–dc converter; hybrid transformer duplexer; impedance matching; power recycling;
  • fLanguage
    English
  • Journal_Title
    Circuits and Systems II: Express Briefs, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    1549-7747
  • Type

    jour

  • DOI
    10.1109/TCSII.2013.2258261
  • Filename
    6507592
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=34624