RF loss as a design parameter in traveling wave tubes

Author

Winslow, Les

Author_Institution

Naval Res. Lab., Washington, DC, USA

fYear

1974

fDate

9-11 Dec. 1974

Firstpage

374

Lastpage

376

Abstract

In a traveling wave tube (TWT) loss is usually in the form of an attenuator, or sever, which is designed to absorb the RF power on the circuit but allow the RF power in the beam. This paper discusses additional uses of RF loss to enhance the performance of TWT´s. The additional uses include the following: prevention of backward wave oscillation (BWO) in helix derived circuits, suppression of band edge oscillation (BEO) in space harmonic circuits, enhancement of overdrive power conditions in TWTs, reduction in AM-PM distortion and harmonic power in overdrive region and efficiency enhancement for medium gain (i.e., 15 to 20 db) TWT´s.

Keywords

attenuators; backward wave oscillators; distortion; losses; microwave tubes; oscillations; radiofrequency oscillators; AM-PM distortion; BEO; BWO; RF loss; RF power; TWT loss; TWT performance; attenuator; backward wave oscillation; band edge oscillation; design parameter; efficiency enhancement; gain 15 dB to 20 dB; harmonic power; helix derived circuits; overdrive power conditions; overdrive region; space harmonic circuits; traveling wave tubes; Blades; Degradation; Electron tubes; Frequency synchronization; Limiting; Radio frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Electron Devices Meeting (IEDM), 1974 International

Conference_Location

Washington, DC

ISSN

0163-1918

Type

conf

DOI

10.1109/IEDM.1974.6219770

Filename

6219770