Design considerations for the high-power multicavity klystron

Author

Tallerico, Paul J.

Author_Institution

University of California, Los Alamos, N. Mex.

Volume

18

Issue

6

fYear

1971

fDate

6/1/1971 12:00:00 AM

Firstpage

374

Lastpage

382

Abstract

A confined-flow large-signal formulation of the klystron interaction equations is presented and applied to the analysis of the multicavity klystron amplifier. The effects of cavity voltage, cavity phase, drift length, and beam parameters are studied. The two- and three-cavity amplifiers are studied in detail, and several numerical examples of four-cavity klystrons are also given. A significant second-harmonic component of velocity modulation is shown to improve the dc to RF conversion efficiency. Two methods of obtaining this modulation are discussed. The large-signal theory presented here has been used to design a five-cavity klystron which is 50 percent efficient and has a controllable power transfer curve. Theoretical and experimental power transfer curves are presented for several 1 1/4-MW klystrons; the calculated output power is between 4 and 10 percent greater than the experimental values.

Keywords

Electron beams; Equations; Klystrons; Motion analysis; Plasma measurements; Power amplifiers; Power generation; Radio frequency; Radiofrequency amplifiers; Voltage;

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/T-ED.1971.17204

Filename

1476526