真空电子技术Issue(2)：14-18,5.
基于高阶叠层型基函数的微波管慢波结构的三维有限元模拟
Three-Dimensional Finite-Element Modeling of Slow-Wave Structures for Microwave Tubes Using Higher-Oder Hierarchical Basis
徐立 1李建清 1杨中海 1李斌1
作者信息
- 1. 电子科技大学大功率微波电真空器件技术国防科技重点实验室,四川 成都 610054
- 折叠
摘要
Abstract
The vector finite elements method with the second-order hierarchical basis is applied to the three-dimensional numerical simulation of slow-wave circuit of microwave tubes through which the high-frequency parameters can be obtained accurately. A convenient and fast approach of removing the spurious DC modes which appeared in the finite-element modeling of slow-wave circuits is proposed and a p-type multiplicative multigrid preconditioned implicitly restarted Arnoldi method is adopted to solve the resulting large-scale generalized eigenvalue problem. Combined with the two advanced techniques, a three-dimensional finite-element simulation tool for slow-wave circuits called MGES is developed. Through practical numerical example, MGES is validated. Moreover, it is found that MGES exhibits superior efficiency.关键词
微波管/慢波结构/有限元法/色散曲线/多重网格法/高阶叠层型基函数Key words
Microwave tubes/ Slow-wave structure/ Finite-element method/ Dispersion curves/ Multigrid/ Higher-order hierarchical basis分类
信息技术与安全科学引用本文复制引用
徐立,李建清,杨中海,李斌..基于高阶叠层型基函数的微波管慢波结构的三维有限元模拟[J].真空电子技术,2012,(2):14-18,5.
