Design and measurement of a broadband sidewall coupler for a W-band gyro-TWA

Zhang, L., He, W., Donaldson, C. R., Garner, J. R., McElhinney, P. and Cross, A. W. (2015) Design and measurement of a broadband sidewall coupler for a W-band gyro-TWA. IEEE Transactions on Microwave Theory and Techniques, 63(10), pp. 3183-3190. (doi: 10.1109/TMTT.2015.2464302)

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Abstract

The input coupler is an important component for a microwave amplifier. In this paper, a sidewall single-hole input coupler for a W-band gyrotron traveling-wave amplifier that operates at the frequency range of 90-100 GHz was designed and measured. Instead of using a cutoff waveguide, a broadband Bragg-type reflector with a small spread in phase was optimized for use as part of the input coupler. The minimum radius of the reflector was two times the size of a cutoff waveguide, which reduced the possibility for some of the beam electrons being collected in this section and lost to the amplifier interaction region.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:McElhinney, Dr Paul
Authors: Zhang, L., He, W., Donaldson, C. R., Garner, J. R., McElhinney, P., and Cross, A. W.
College/School:College of Medical Veterinary and Life Sciences > School of Psychology & Neuroscience
Journal Name:IEEE Transactions on Microwave Theory and Techniques
Publisher:IEEE
ISSN:0018-9480
ISSN (Online):1557-9670
Published Online:14 August 2015

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