一种方同轴波导中高次模截止波长的求解  

A New Method of Calculating Cutoff Wavelength of High-order Modes in Square Coaxial Transmission Wave-guides

作　　者：王伟[1] 卢万铮[1] 赵炯[1] 戚云军[1] 

机构地区：[1]空军工程大学电讯工程学院,陕西西安710077

出　　处：《现代电子技术》2003年第22期96-98,共3页Modern Electronics Technique

摘　　要：提出了一种方同轴波导高次模截止波长的求法 ,文中使用有限差分法 ,并对不同的边界条件进行了处理。对于离散形式的数值方程 ,采用双重高斯塞德尔迭代法求解 ,并进行了改进 ,从而极大地提高数值解收敛的速度。This paper discussed a new method of calculating the cutoff wavelength of highorder modes in square coaxial transmission waveguides. It applies FDI method, and makes some processing of boundary condition. Then, it turns to a kind of duplex gauss-iterate to solve thisequation. According to the specific situation, it makes some fitted modification, and this speeds up solving the more precise equation. Finally the reasonableness of the results is analyzed.

关 键 词：方同轴波导 高次模 截止波长 有限差分法 双重高斯塞德尔迭代法 玄姆霍兹方程 

分 类 号：TN814[电子电信—信息与通信工程]