四分量二维紧凑格式频域有限差分方法对粗糙导体表面导波结构的分析

Compact 4-Component 2-D FDFD Method to the Calculation of Surface Roughness Guide Wave Structure

文章利用四分量紧凑格式的二维频域有限差分方法(2-DFDFD),结合等效表面阻抗边界条件(SIBC),对粗糙导体表面导波结构的传输特性进行数值分析。根据等效表面阻抗边界条件,可以方便地计算边界上的切向场。只要求出本征方程,在给定频率上的传播常数就可以作为其特征值而被求得。

Compact 4-component 2-D finite-difference frequency-domain method （2-D FDFD） with equivalent surface impedance boundary condition （SIBC） is applied for the numerical analysis of the propagation characteristics of surface roughness guided wave structures in this paper. According to the equivalent surface impedance boundary condition, the transverse field components on the boundary can be calculated easily. Once the eigen equation is solved, the propagation constant can be obtained as the algen value for a given frequency.