Title :
A Novel Approach of Removing Spurious DC Modes in Finite-Element Solution for Modeling Microwave Tubes
Author :
Xu, Li ; Ye, Zhen ; Yang, Zhong-Hai ; Li, Jian-Qing ; Li, Bin
Author_Institution :
Vacuum Electron. Nat. Lab., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A convenient and efficient approach for removing the spurious dc modes in finite-element solutions for modeling microwave tubes is proposed. This method is based on higher-order hierarchical-basis functions and is able to deal with both standard and rotated periodic boundary conditions. The application of this approach results in a robust, accurate, and efficient eigensolver for slow-wave structures, which significantly reduces the required memory and computational time.
Keywords :
finite element analysis; microwave tubes; eigensolver; finite-element solution; higher-order hierarchical-basis function; microwave tube; slow-wave structure; spurious DC mode; Boundary condition; Electron tubes; Finite element methods; Microwave devices; DC modes; finite-element method (FEM); hierarchical basis; periodic boundary condition (PBC); slow-wave structures (SWSs);
Journal_Title :
Electron Devices, IEEE Transactions on
DOI :
10.1109/TED.2010.2068549
