Title :
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
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;
Conference_Titel :
Electron Devices Meeting, 1988. IEDM '88. Technical Digest., International
Conference_Location :
San Francisco, CA, USA
DOI :
10.1109/IEDM.1988.32832
