Backward wave oscillation suppression study of the helix travelling wave tube

Mukesh Kumar Alaria and S. K. Ghosh

Journal of Electromagnetic Waves and Applications, 2019, vol. 33, issue 5, 557-563

Abstract: In this paper, the effect of backward wave oscillation (BWO) on helix slow wave structure performance for TWT has been described. In this paper both the cases tapered and untapered helix slow wave structure (SWS) have been analyzed, caused by BWO for high gain helix TWT. In house developed the one-dimensional (SUNRAY-1D) large signal analysis model has been used for stability analysis of the helix SWS. The analysis on backward wave amplifier gain has been carried out as a function of the taper parameter and frequency parameter. The position and nature of tapering also affect the electronic efficiency as well as the start oscillation current. Hence, position and nature of tapering have been optimized.

Date: 2019
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DOI: 10.1080/09205071.2018.1561332

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