圆形槽波导中径向盘厚度对阻抗的影响  

The Impedance Relation to Thickness of Radial Transmission Line in Circular Groove Guide

作　　者：杨鸿生[1] 郭雪锋[1] 姚靖[1] 郑福萍[1] 崔立成[1] 

机构地区：[1]东南大学电子工程系毫米波国家重点实验室,南京210096

出　　处：《电子器件》2004年第1期49-52,共4页Chinese Journal of Electron Devices

摘　　要：应用时域有限差分法(FDTD)计算圆形槽波导中径向盘输入阻抗。用一种简单方法来近似圆形槽波导的曲线金属边界。完全匹配层(PML)应用于圆形槽波导的开放边界。用细网格计算我们关注的径向盘中的场值。最后,由电压和电流的傅立叶变换的比值得到随径向盘厚度变化的输入阻抗。Finite-difference time-domain (FDTD) method is used to calculate the driving-point impedance of radial transmission line in circular groove guide. A simple way is used to approximate the curvilinear metal boundary of circular groove guide. And the perfectly matched layer (PML) is applied on the open boundary of circular groove guide. Fine-grid is used to calculate the fields in the radial transmission line in which we are interest. At last, the driving - point impedances related to different thickness of the radial transmission line are obtained from the ratio of the Fourier transform of the voltage to the Fourier transform of the current.

关 键 词：圆形槽波导 时域有限差分 径向盘 

分 类 号：TN015[电子电信—物理电子学]