Tape-helix model of analysis for the dispersion and interaction impedance characteristics of a helix loaded with a double-negative metamaterial for potential application in vacuum electron devices

Amit K. Varshney, Raktim Guha, Sushanta Biswas, Partha Pratim Sarkar, Subrata K. Datta and B. N. Basu

Journal of Electromagnetic Waves and Applications, 2019, vol. 33, issue 2, 138-150

Abstract: The tape-helix model of analysis of a helix surrounded by a double-negative metamaterial tube in a metal envelope was developed adding a rigor to the earlier analysis that had used the simple sheath-helix model. The analyses using these two models were compared and validated against CST simulation. The structure supporting backward waves opens up the potential application of the structure in backward-wave vacuum electron device.

Date: 2019
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DOI: 10.1080/09205071.2018.1530614

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