Multiple extraction cavities for high-power klystrons

Author

Lee, T.G.

Author_Institution

SLAC, Stanford Univ., CA, USA

Volume

40

Issue

7

fYear

1993

fDate

7/1/1993 12:00:00 AM

Firstpage

1329

Lastpage

1334

Abstract

The design and performance of an X-band high-power klystron amplifier utilizing an output circuit consisting of two uncoupled output cavities are described and compared with 2-D computer simulation results. It is shown that good efficiency, low RF gap gradient, relatively uniform power extraction from each cavity, and freedom from oscillations due to extraneous modes can be achieved. The change in phase relative to the RF input for the two extraction cavities is relatively small within a frequency bandwidth on the order of 1%, when the beam voltage or drive power is varied over a moderate range. For narrowband applications, where the combining of the separate outputs is desired, good combining efficiency is possible. The number of extraction cavities can be extended to obtain still higher peak powers

Keywords

cavity resonators; klystrons; microwave amplifiers; RF gap gradient; X-band; beam voltage; combining efficiency; computer simulation; drive power; efficiency; extraneous modes; high-power klystrons; narrowband applications; peak powers; power extraction; uncoupled output cavities; Bandwidth; Breakdown voltage; Computer simulation; Coupling circuits; Electric breakdown; Klystrons; Narrowband; Power generation; Radio frequency; Space vector pulse width modulation;

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/16.216440

Filename

216440