Title :
A W-band Gyro-BWO based on helically corrugated waveguide
Author :
He, Wenlong ; Phelps, A.D.R. ; Donaldson, C.R. ; Cross, A.W. ; Ronald, K.
Author_Institution :
Dept. of Phys., Univ. of Strathclyde, Glasgow
Abstract :
A W-band gyrotron backward wave oscillator (Gyro-BWO) with a helically corrugated waveguide as the beam- wave interaction region and a cusp gun as the electron beam source is presented. The electron beam system and the beam- wave interaction were optimized for output power and frequency bandwidth by numerical simulations. A 3 dB bandwidth of -84- 104 GHz and output power -10 kW were predicted using a 40 kV, 1.5 A axis-encircling electron beam with an alpha of 1.6 from the cusp gun. The W-band helically corrugated interaction region was manufactured with dispersion from 76 GHz to 110 GHz measured in good agreement with simulations and theory.
Keywords :
backward wave oscillators; electron beams; gyrotrons; helical waveguides; millimetre wave oscillators; W-band gyro-BWO; bandwidth 84 GHz to 104 GHz; beamwave interaction region; current 1.5 A; electron beam cusp gun; frequency 76 GHz to 110 GHz; helically corrugated waveguide; power -10 kW; voltage 40 kV; Bandwidth; Dispersion; Electromagnetic waveguides; Electron beams; Extraterrestrial measurements; Frequency; Gyrotrons; Magnetic field measurement; Power generation; Waveguide components; cusp; gyro-BWO; gyro-TWA; gyro-device; gyrotron; helically corrugated waveguide; high power microwave; theory.;
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.2007.4516638
