DocumentCode
1962563
Title
A 700 W 12 GHz TWT for TV Satellite Applications
Author
Seunik, Horst ; Hanf, Fritz ; Wallander, Sven
Author_Institution
Tubes Division, Siemens AG, Munich
fYear
1974
fDate
10-13 Sept. 1974
Firstpage
56
Lastpage
60
Abstract
As part of a 700 W CW transponder for a direct TV broadcasting satellite operating in the 11.7 to 12.5 GHz band, a traveling-wave tube (TWT) and directly radiating multistage collector are being developed. The state-of-the-art TWT is periodic permanent magnet (PPM) focused and incorporates a novel type of coupled cavity slow wave structure comprising three gain sections with a velocity taper in the final section for efficiency improvement. The five-stage depressed collector for further efficiency improvement is made of carbon and radiates directly into space.
Keywords
Capacitance; Coupling circuits; Equations; Equivalent circuits; Impedance; Permanent magnets; Power supplies; Satellite broadcasting; TV broadcasting; Transponders;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Conference, 1974. 4th European
Conference_Location
Montreux, Switzerland
Type
conf
DOI
10.1109/EUMA.1974.332011
Filename
4130652
Link To Document