标题: 利用时域有限差分法解微带线之结构
Finite-Difference Time-Domain (FDTD) Electromagnetic Computation for Microstrip Structures
作者: 徐建芬
Chien-Fen Hsu
郭仁财
Jen-Tasi Kuo
电信工程研究所
关键字: 时域有限差分法;finite-difference time-domain;perfectly matched layer;PML;ABC;source plane
公开日期: 1998
摘要: 摘要
本论文使用有限差分时域法探讨微带线之散射参数,且使用PML-ABC 作为FDTD 之吸收边界条件。论文中探讨激发源发射位置置于边界面若干格距,有别于激发源置于边界面上,造成边界面既为信号面亦为吸收边界面,此种切换的麻烦。此外,亦证实在50 ohm 微带线上,PML ABC 之吸收率较Mur ABC 来得好。论文模拟及实作出微带线之其他结构。
Abstract
In this thesis, the Finite-Difference Time-Domain (FD-TD) is employed to study the scattering parameters of microstrip structures, based on the use of Berenger's perfectly matched layer (PML) boundary condition. To begin with, a simple and efficient source excitation scheme for the FD-TD analysis of microstrip structures is developed. In this scheme, by moving the source plane several cells inside the near-end boundary, the interaction between the excitation and reflected waves are totally separated in time domain. In addition, the thesis verifies Berenger's PML ABC is more accurate than the Mur ABC for a 50ohm infinitely long microstrip line. The FD-TD method employing Berenger's PML is applied to analysis the coupled-line couplers, nonuniform coupled microstrips, and three-line microstrips. The simulated and measured S-parameters are shown and discussed in this thesis.
URI: http://140.113.39.130/cdrfb3/record/nctu/#NT870435081
http://hdl.handle.net/11536/64540
显示于类别:Thesis