• DocumentCode
    1233542
  • Title

    Varactor Tuning Applied to AM-FM Receivers

  • Author

    De Cola, Rinaldo

  • Author_Institution
    Warwick Electronics Inc. Chicago, Ill.
  • Volume
    13
  • Issue
    2
  • fYear
    1967
  • fDate
    7/1/1967 12:00:00 AM
  • Firstpage
    82
  • Lastpage
    86
  • Abstract
    A simple, practical, analytical solution to varactor phenomena is developed. Starting with the basic equation, C = Co/(l + E/ϕ)n, where C, the varactor capacitance is determined by E, an applied complex voltage, constituting a fixed dc voltage plus a desired and an undesired rf voltage; ϕ, the contact potential, and the exponent n, which is determined by the junction construction. The characteristics associated with var9ctors having various values of n, are analyzed. Means whereby distortion effects can be minimized are illustrated. It is shown that by using varactor tuning, practical AM-FM broadcast receivers having unique characteristics can be constructed.
  • Keywords
    Broadcasting; Capacitors; Frequency modulation; Oscillators; Tuning; Varactors;
  • fLanguage
    English
  • Journal_Title
    Broadcast and Television Receivers, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9308
  • Type

    jour

  • DOI
    10.1109/TBTR1.1967.4320074
  • Filename
    4320074
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1233542