Title :
W-band gyro-devices using cusp electron gun and helically corrugated interaction region
Author :
He, W. ; Donaldson, C.R. ; Zhang, L. ; McElhinney, P. ; Phelps, A.D.R. ; Ronald, K. ; Cross, A.W.
Author_Institution :
Dept. of Phys., Univ. of Strathclyde, Glasgow, UK
Abstract :
Theoretical calculation, numerical simulation and experimental development of W-band gyro-devices with helically corrugated waveguides and a cusp electron gun are presented. The cusp gun generated a 40 keV, 1.5 A axis-encircling electron beam. The maximum output of the gyro-TWA was predicted to be 10 kW with a 3dB frequency bandwidth of 90-100 GHz and a saturated gain of 40 dB. The gyro-BWO output was predicted as 10 kW with a frequency tuning range of 84-104 GHz. These gyro-devices have been operated successfully and the latest experimental results will be presented.
Keywords :
electron beams; electron guns; helical waveguides; travelling wave amplifiers; W-band gyro-devices; bandwidth 90 GHz to 100 GHz; current 1.5 A; cusp electron gun; electron beam; electron volt energy 40 keV; frequency 84 GHz to 101 GHz; gain 40 dB; gyro-BWO; gyro-TWA; helically corrugated interaction region; power 10 kW; Cathodes; Dispersion; Electron beams; Helium; Microwave amplifiers; Microwave measurements; Microwave oscillators;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2012 37th International Conference on
Conference_Location :
Wollongong, NSW
Print_ISBN :
978-1-4673-1598-2
Electronic_ISBN :
2162-2027
DOI :
10.1109/IRMMW-THz.2012.6380433
