• DocumentCode
    1021696
  • Title

    Efficiency of tapered backward-wave oscillators

  • Author

    Haddad, G.J. ; Rowe, J.E.

  • Author_Institution
    The University of Michigan, Ann Arbor, Mich.
  • Volume
    11
  • Issue
    1
  • fYear
    1964
  • fDate
    1/1/1964 12:00:00 AM
  • Firstpage
    20
  • Lastpage
    30
  • Abstract
    The effect of a tapered circuit phase velocity on the efficiency of an O-type backward-wave-oscillator (BWO) is investigated. Circuit tapers based on a hard-kernel-bunch approximation are derived. It is shown that when such tapers are applied to realistic BWO\´s higher efficiencies result. An experimental S -band BWO with a variable pitch helix designed on the basis of the hard-kernel-bunch theory was constructed. An efficiency improvement of 20 per cent to 80 per cent over a frequency range of 2 to 3.75 Gc has been obtained.
  • Keywords
    Circuits; Electron tubes; Forward contracts; Helium; Laboratories; Lagrangian functions; Nonlinear equations; Oscillators; Physics; Radio frequency;
  • fLanguage
    English
  • Journal_Title
    Electron Devices, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9383
  • Type

    jour

  • DOI
    10.1109/T-ED.1964.15274
  • Filename
    1473662
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1021696