Development of a brazed-helix TWT for future Ka-band earth stations delivering 200 W in the band 27.5-30 GHz

Author

Wartski, S. ; Henry, D. ; Santonja, N.

Author_Institution

THOMSON-CSF Div. Tubes Electroniques, Boulogne-Billancourt, France

fYear

1988

fDate

11-14 Dec. 1988

Firstpage

366

Lastpage

369

Abstract

The development of a family of brazed helix CW TWTs (continuous wave traveling wave tubes) operating in the 27.5-30-GHz frequency band is described. Results are given for a 200-W model now in the final stages of development, along with a description of the main technological choices and operating parameters. Power levels of 180 W CW have been obtained from a breadboard model, and 200 W will be easily obtained by minor adjustments to helix geometry. Destined for uplink earth station amplifiers in satellite communications applications, this tube has been optimized to meet the needs of civilian equipment users, offering high performance, low cost, high reliability, and long life expectancy. Preliminary tests confirm that the TWTs meet these criteria.<>

Keywords

satellite ground stations; telecommunication equipment; travelling-wave-tubes; 200 W; 27.5 to 30 GHz; Ka-band earth stations; brazed helix CW TWTs; breadboard model; long life expectancy; reliability; satellite communications; uplink earth station amplifiers; Cathodes; Electron optics; Electron tubes; Frequency conversion; Production; Radio frequency; Satellite ground stations; Solid modeling; Switches; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electron Devices Meeting, 1988. IEDM '88. Technical Digest., International

Conference_Location

San Francisco, CA, USA

ISSN

0163-1918

Type

conf

DOI

10.1109/IEDM.1988.32832

Filename

32832