Title :
Second-harmonic Ka-band gyro-TWT with axis-encircling electrons
Author :
Harriet, S.B. ; McDermott, D.B. ; Hirata, Y. ; Luhmann, N.C., Jr.
Abstract :
A 30 GHz second-harmonic TE/sub 21/ gyro-TWT amplifier is being constructed at UCD that will be driven by a 70 kV, 3.5 A, v/sub ⊥//v/sub Z/=1.2, Δv/sub Z//v/sub Z/=7%, axis-encircling electron beam from a Northrop Grumman cusp gun. The single-stage amplifier is predicted by a large-signal simulation code to generate 50 kW at 30 GHz with 20% efficiency, 32 dB saturated gain and 3% constant-drive bandwidth.
Keywords :
electron beams; gyrotrons; harmonics; millimetre wave power amplifiers; millimetre wave tubes; travelling wave tubes; 20 percent; 3.5 A; 30 GHz; 32 dB; 50 kW; 70 kV; EHF; Ka-band gyro-TWT; MM-wave tube; TE/sub 21/ mode; axis-encircling electron beam; cusp gun; large-signal simulation code; second-harmonic gyro-TWT; single-stage amplifier; Circuits; Cranes; Electron beams; Gain; Magnetic fields; Power amplifiers; Power system harmonics; Predictive models; Tellurium; User centered design;
Conference_Titel :
Infrared and Millimeter Waves, 2000. Conference Digest. 2000 25th International Conference on
Conference_Location :
Beijing, China
Print_ISBN :
0-7803-6513-5
DOI :
10.1109/ICIMW.2000.893049
