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This paper presents the application of hierarchical vector finite element method (FEM) with second-order basis for modeling slow-wave structures (SWSs) in microwave tubes, and consequently, a robust, fast and efficient multigrid eigensolver (MGES) is developed to simulate the SWSs.
A 3-D advanced specialized simulator for designing a microwave-tube slow-wave structure (SWS), called the high-frequency circuit simulator (HFCS), has been developed. It is one module of our recently developed microwave-tube simulator suite. The four major features of the HFCS are as follows: 1) Both the lower and higher order tetrahedral basis functions are applied in the finite-element analysis;...
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