W-band gyro-devices using cusp electron gun and helically corrugated interaction region

He, W. and Donaldson, C.R. and Zhang, L. and McElhinney, P. and Phelps, A.D.R. and Ronald, K. and Cross, A.W.; (2012) W-band gyro-devices using cusp electron gun and helically corrugated interaction region. In: 2012 37th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz). IEEE, AUT, pp. 1-3. ISBN 978-1-4673-1598-2

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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.