Microwaves pp 236-242 | Cite as

The parametric reduction of the amplitude of slow space-charge waves in an experimental device

  • M. C. Davies
  • K. T. W. Milne


At the 1960 International Congress on Microwave tubes held in Munich, Sturrock [l] proposed a scheme for using the principle of parametric pumping to reduce the slow wave noise in an electron beam. This mechanism could be used, for example, as the basis of a low noise travelling wave amplifier. Since the slow wave is a negative a. c. power carrier, the slow wave noise cannot be removed from the beam by direct coupling to a matched resistance.


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  1. [1]
    STURROCK, P. A., Parametric Refrigeratian — A Mechanism for Removal of Noise from the Slow Wave of an Electron beam, Record of the International Congress on Microwave Tubes, Munich, 7–11 June 1960, p. 406, (Fri edr. Vi eweg and Sohn, Braunschweig).Google Scholar
  2. [2]
    LOUISELL, W.H., Coupled Mode and Parametric El ectronics, (Wiley), 1960.Google Scholar
  3. [3]
    LOUISELL, W. H. and QUATS, C.F., Parametric Amplification of Space-Charge Waves, Proc. I.R.E., 46, No. 4, 707, April 1958.CrossRefGoogle Scholar

Copyright information

© N.V. Uitgeversmaatschappij Centrex 1963

Authors and Affiliations

  • M. C. Davies
    • 1
  • K. T. W. Milne
    • 1
  1. 1.The General Electric Company Limited, Central Research LaboratoriesHirst Research CentreWembleyEngland

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