• DocumentCode
    182199
  • Title

    Envelop tracking concept for space TWTs with higher efficiency

  • Author

    Andre, Frederic

  • Author_Institution
    Thales Electron Devices, Vélizy, France
  • fYear
    2014
  • fDate
    22-24 April 2014
  • Firstpage
    49
  • Lastpage
    50
  • Abstract
    The high efficiency requirements for space TWTs can be addressed by envelop tracking. In the new concept we describe here the beam current is commanded by the instantaneous envelop power of the modulated signal to be amplified. New technologies of cold cathodes could enable such current modulation in the future. Here we assess the benefits of envelop tracking concept for different kinds of modulation scheme.
  • Keywords
    cathodes; modulation; radiofrequency power amplifiers; travelling wave tubes; RF power amplifier; beam current; cold cathodes; current modulation; envelop power; envelop tracking concept; high efficiency requirements; modulated signal; space TWT; Anodes; Cathodes; Frequency modulation; Phase shift keying; Satellites; Standards; Space TWTs; envelop tracking; modulation;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Vacuum Electronics Conference, IEEE International
  • Conference_Location
    Monterey, CA
  • Type

    conf

  • DOI
    10.1109/IVEC.2014.6857484
  • Filename
    6857484
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=182199