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Microwaves pp 231-235 | Cite as

Parametric refregeration discussion and experimental verification of the removal of slow-wave noise

  • P. A. Sturrock
  • G. C. van Hoven
  • A. Karp
Chapter

Abstract

It was for some time believed that it is impossible to remove noise from the slow waves of an electron beam [1]. Since the operation of a large class of microwave amplifiers depends on the coupling of the negative energy slow wave to a circuit, this belief led to the statement of various minimum noise figure theorems [2]. As a result of these theorems, much effort has been expended on the development of amplifiers which use the fast beam waves [3]; these waves may, in principle, be stripped of all emission excited noise.

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Copyright information

© N.V. Uitgeversmaatschappij Centrex 1963

Authors and Affiliations

  • P. A. Sturrock
    • 1
  • G. C. van Hoven
    • 1
  • A. Karp
    • 1
  1. 1.Microwave Laboratory, W. W. Hansen Laboratories of PhysicsStanford UniversityStanfordUSA

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