Title :
A novel W-band quasioptical gyro-TWT
Author :
Sirigiri, J.R. ; Kreischer, K.E. ; Shapiro, M.A. ; Temkin, R.J.
Author_Institution :
Plasma Sci. & Fusion Center, MIT, Cambridge, MA, USA
Abstract :
We present the design of a novel, quasioptical gyro-TWT capable of producing 120 kW at 141 GHz- with 28% efficiency, 38 dB saturated gain and a constant drive bandwidth of 3%. The gyro-TWT utilizes an overmoded confocal waveguide with a tremendous potential for high average power operation. The amplifier is currently under construction. Ongoing experiments with an oscillator configuration have produced 81 kW at 136 GHz. A second harmonic oscillator experiment is also investigated.
Keywords :
gyrotrons; harmonic generation; millimetre wave amplifiers; travelling wave amplifiers; travelling wave tubes; wideband amplifiers; 120 kW; 136 GHz; 141 GHz; 28 percent; 81 kW; MM wave amplifier; W-band quasi-optical gyro-TWT; confocal mirrors; constant drive bandwidth; high average power operation; high loss sever; low-loss transmission line; overmoded confocal waveguide; saturated gain; second harmonic oscillator; Bandwidth; Circuits; Diffraction; Gain; High power amplifiers; Millimeter wave radar; Mirrors; Optical reflection; Oscillators; Power generation;
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.2000.892988
