Title :
Initial operation of a wideband 140 GHz, 1kW confocal gyro-traveling wave amplifier
Author :
Joye, C.D. ; Shapiro, M.A. ; Sirigiri, J.R. ; Temkin, R.J. ; Torrezan, A.C.
Author_Institution :
Plasma Sci. & Fusion Center, MIT, Cambridge, MA
Abstract :
The initial experimental results of a zero-drive stable, short pulse 140 GHz gyro-traveling wave tube amplifier are presented. The amplifier has achieved a linear gain of 31 dB in experiment, and peak output powers up to 400 W have been observed at a beam voltage of 39.5 kV, beam current of 1.65 A, and beam pitch factor of 0.9 from a novel high order HE(0,6) operating mode of a quasi-optical confocal waveguide.
Keywords :
travelling wave amplifiers; travelling wave tubes; current 1.65 A; frequency 140 GHz; gain 31 dB; gyro-traveling wave tube amplifier; power 1 kW; quasioptical confocal waveguide; voltage 39.5 kV; Broadband amplifiers; Frequency measurement; Gain measurement; Magnetic field measurement; Mirrors; Operational amplifiers; Power amplifiers; Power generation; Power measurement; Pulse amplifiers; Confocal waveguide; gyro traveling wave amplifier; quasi-optical;
Conference_Titel :
Infrared and Millimeter Waves, 2007 and the 2007 15th International Conference on Terahertz Electronics. IRMMW-THz. Joint 32nd International Conference on
Conference_Location :
Cardiff
Print_ISBN :
978-1-4244-1438-3
DOI :
10.1109/ICIMW.2007.4516538
