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Design of phase-veolcity tapers in coupled-cavity TWTS.

Research output: Contribution to journalJournal article

Published

Journal publication date10/1991
JournalIEE Proceedings H (Microwaves, Antennas and Propagation)
Journal number5
Volume138
Number of pages6
Pages469-474
Original languageEnglish

Abstract

The efficiency of travelling-wave tubes (TWTs) operated under nonlinear conditions is usually enhanced by adjusting the phase velocity of the slow-wave circuit towards the output end of the tube. This technique, known as tapering, aims to maintain the optimum phase relationship between the electron bunches and the slow electromagnetic wave. The paper describes the results of a study of taper design carried out using a one-dimensional large signal computer model of coupled-cavity TWTs. An improved taper design procedure for broad-band TWTs is suggested.