一种新的吸收边界条件及其在TLM法中的应用

应用科学学报 ›› 2001, Vol. 19 ›› Issue (1): 24-28.

一种新的吸收边界条件及其在TLM法中的应用

邵振海, 朱辰东, 洪伟, 何立权

东南大学无线电工程系毫米波国家重点实验室, 江苏南京 210096

收稿日期:1999-10-21 修回日期:2000-01-19 出版日期:2001-03-31 发布日期:2001-03-31
作者简介:邵振海(1972-),男,江苏宝应人,博士生.
基金资助:
国家杰出青年基金项目(69625102)

A New Kind of Absorbing Boundary Condition and Its Application for 3-D TLM Method

SHAO Zhen-hai, ZHU Chen-dong, HONG Wei, HE Li-quan

State Key Laboratory of Millimeter Waves, Department of Radio Engineering, Southeast University, Nanjing 210096, China

Received:1999-10-21 Revised:2000-01-19 Online:2001-03-31 Published:2001-03-31

摘要/Abstract

摘要： 基于Z变换透射边界条件的统一理论,构成出一种新的能够适用于对称压缩顶点传输线矩阵法的吸收边界条件,并将它应用于导波问题的计算.与Higdon吸收边界条件相比,这种新的吸收边界条件不会产生假模,不需对时间偏移因子作任何修改而且更加精确有效.给出的递推公式可方便地求出不同阶数的吸收边界条件的系数.

关键词: 传输线矩阵法, Z变换透射边界条件, 递推公式, 微带传输线

Abstract: A new kind of absorbing boundary conditions based on the theory of generalized Z-domain absorbing boundary conditions (Z-ABCs) for the 3D TLM SCN method is presented. The results indicate that the Z-ABCs show better performance than Higdon's ABC in suppressing instability caused by spurious modes. The different order coefficients of this new Z-ABCs can be given by a recurrence formula.

Key words: transmission-line method, generalized Z-domain absorbing boundary condition, microstrip, recurrence formula

中图分类号:

TN801

邵振海, 朱辰东, 洪伟, 何立权. 一种新的吸收边界条件及其在TLM法中的应用[J]. 应用科学学报, 2001, 19(1): 24-28.

SHAO Zhen-hai, ZHU Chen-dong, HONG Wei, HE Li-quan. A New Kind of Absorbing Boundary Condition and Its Application for 3-D TLM Method[J]. Journal of Applied Sciences, 2001, 19(1): 24-28.