• DocumentCode
    1972376
  • Title

    An 18 Channel, Phase-Matched, Single-Conversion Upconverter from 30MHz to L-Band

  • Author

    Goaaher, A.A.

  • Author_Institution
    Marconi Space and Defence Systems Ltd., Portsmouth, Hampshire, England.
  • fYear
    1978
  • fDate
    4-8 Sept. 1978
  • Firstpage
    146
  • Lastpage
    150
  • Abstract
    An 18 channel, phase-matched Upconverter has been developed by Marconi Space and Defence Systems Ltd. The Upconverter translates the 18 separate IF signals from 30MHz to L-Band while maintaining the channel phase and amplitude relationships. To ease phase tracking problems a sub-harmonically pumped mixer is used. This provides an effective LO rejection greater than 50dB and thus enables a single conversion to be used without high-order filtering. The applications and limitations of sub-harmonically pumped mixing schemes applied to upconverters are discussed.
  • Keywords
    Automatic logic units; Circuits; Filtering; Filters; Frequency conversion; L-band; Mixers; Phased arrays; Power amplifiers; Power generation;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Microwave Conference, 1978. 8th European
  • Conference_Location
    Paris, France
  • Type

    conf

  • DOI
    10.1109/EUMA.1978.332529
  • Filename
    4131196
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1972376