Theoretical research on branch-guide energy coupler for wide bandwidth terahertz relativistic sheet electron beam TWTs

Yabin Zhang

Journal of Electromagnetic Waves and Applications, 2020, vol. 34, issue 18, 2385-2396

Abstract: Branch-guide energy couplers can be used in the terahertz relativistic sheet electron beam traveling wave tubes (THz-RSBTWT) for high and high frequency microwave radiations. To analyze this type of coupler, a new method based on the phase superposition principle was put forward in this paper. A physical model was developed, which is applicable no matter the coupler width is large or small. The general distance relationship between the branches was derived and a rapid design formula was obtained, which can help design energy coupler with arbitrary coupling coefficient.

Date: 2020
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DOI: 10.1080/09205071.2020.1815594

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