Matlab求解方同轴波导的截止波长和特性阻抗  

Solve the Cutoff Wavelength and Characteristic Impedance in Square Coaxial Transmission with Matlab

作　　者：李明[1] 

机构地区：[1]兰州交通大学信息与电气工程学院,甘肃兰州730070

出　　处：《现代电子技术》2007年第1期115-117,共3页Modern Electronics Technique

基　　金：甘肃省自然科学基金项目(3ZS042-B25-034)

摘　　要：采用有限差分法利用Matlab求解了方同轴波导的特性阻抗和高次模的截止波长,并将数据与国外文献数据进行了对比,证明了有限差分法结合Matlab在分析简单截面的同轴波导时是简单可行的,而且计算精度较高,通用性强,可以用于传输线工程问题的设计和计算。最后计算了矩形同轴线的相关数据用于与方形同轴线作对比。The paper applies Matlab based on the FDI method to solve the characteristic impedance and cutoff wavelength of high- order modes in square coaxial transmission. Through comparing the data with the equivalent in foreign paper, it is proved that the FDI method with Matlab is a simple and feasible method. It has high accuracy,common usefulness and it can be applied generally for the analysis of transmitsion lines. At last it calculates the related data of rectangular coaxial transmission, and compares it with the square coaxial.

关 键 词：方同轴波导 有限差分法 玄姆霍兹方程 特性阻抗 截止波长 

分 类 号：TP391.77[自动化与计算机技术—计算机应用技术]