Accession Number : ADD005715

Title :   Frequency-Selective Loss Technique for Oscillation Prevention in Traveling-Wave Tubes.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Vanderplaats,Norman R ; Arnett,Henry D

Report Date : 15 Aug 1978

Pagination or Media Count : 12

Abstract : Backward-wave oscillations in a helix or helix-derived traveling-wave tube are prevented by dimensioning the conductive shell surrounding the helix so that the backward-wave space harmonic of the slow-wave interaction circuit has a cutoff frequency in the vicinity of the frequency of the potential backward-wave oscillations. Lossy material is disposed between the shell and helix so that there is strong coupling between the electromagnetic field and the lossy material near the cutoff frequency of the backward-wave space harmonic. (Author)

Descriptors :   *Patents, *Traveling wave tubes, Helixes, Slow wave circuits, Oscillators, Prevention, Losses

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE