Electromagnetic wave propagation through an azimuthally perturbed helix
- 1 November 1985
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 58 (9) , 3625-3627
- https://doi.org/10.1063/1.336294
Abstract
A field analysis is developed for the helical slow-wave structure of a traveling-wave tube in the anisotropic sheath helix model considering the effects of the azimuthal harmonics generated due to periodical positioning of the support bars around the helix. A practical relevance is added to the problem by way of considering the effect of an overall metal enclosure; the losses of the structure are, however, ignored. The analytical result justifies the usual heuristic approach of treating the support bars as a continuous dielectric of a suitably interpreted permittivity.This publication has 5 references indexed in Scilit:
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- Theoretical and experimental TWT helix loss determinationIEEE Transactions on Electron Devices, 1979
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