Demonstration of high average power W-band gyro-amplifiers

Author

Blank, M. ; Felch, K. ; James, B.G. ; Borchard, P. ; Cahalan, P. ; Chu, T.S. ; Danly, B.G. ; Pershing, D.E. ; Nguyen, K. ; Calame, J.P. ; Levush, B.

Author_Institution

CPI, Palo Alto, CA, USA

fYear

2000

fDate

12-15 Sept. 2000

Firstpage

113

Lastpage

114

Abstract

The experimental demonstration of a five-cavity, high average power W-band (75-110 GHz) gyroklystron amplifier is reported. The gyroklystron produced 10.2 kW average output power and 31% electronic efficiency in the TE/sub 011/ mode using a 55 kV, 6 A electron beam at 10% RF duty factor. At this operating point, the instantaneous full-width-half-maximum (FWHM) bandwidth was 700 MHz and the saturated gain was 33 dB. At a higher magnetic field, a FWHM bandwidth of 1050 MHz was achieved at 4 kW average power and 10% RF duty factor. These results represent substantial improvement over the performance of the demonstrated four-cavity, 10 kW average power gyroklystron amplifier.

Keywords

cavity resonators; gyrotrons; klystrons; millimetre wave power amplifiers; millimetre wave tubes; 10.2 kW; 1050 MHz; 31 percent; 33 dB; 4 kW; 55 kV; 6 A; 700 MHz; 75 to 110 GHz; EHF; MM-wave tubes; TE/sub 011/ mode; W-band gyro-amplifiers; five-cavity configuration; gyroklystron amplifier; high average power gyroamplifiers; Bandwidth; Electron beams; Gain; High power amplifiers; Klystrons; Power amplifiers; Power generation; Radio frequency; Radiofrequency amplifiers; Tellurium;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared and Millimeter Waves, 2000. Conference Digest. 2000 25th International Conference on

Conference_Location

Beijing, China

Print_ISBN

0-7803-6513-5

Type

conf

DOI

10.1109/ICIMW.2000.892958

Filename

892958