Accession Number : ADA130204

Title :   High Space Harmonic Perturbations in Travelling Wave Tubes,

Corporate Author : NAVAL SURFACE WEAPONS CENTER SILVER SPRING MD

Personal Author(s) : Uhm,Han S ; Choe,Joon Y ; Kim,Chung M

PDF Url : ADA130204

Report Date : 07 Jan 1983

Pagination or Media Count : 33

Abstract : Stability properties of the free streaming mode in an electron beam propagating through a cylindrical waveguide loaded with a tape helix are investigated, including influence of high space harmonic perturbations. Closed algebraic dispersion relation of the free streaming mode are obtained. Properties of the high space harmonic perturbations are numerically investigated in connection with application on a high frequency microwave amplifier. One of the most important features in this analysis is that instability of high harmonic perturbations occurs at a very large value of microwave frequency. In this regard, millimeter microwave can be easily attainable by reducing the helix radius to a subcentimeter.

Descriptors :   *Harmonics, *Traveling wave tubes, Electron beams, Stability, Free stream

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE