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

fYear

2000

fDate

12-15 Sept. 2000

Firstpage

177

Lastpage

178

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;

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.2000.892988

Filename

892988