三维PML吸收边界条件在微带线不连续性问题分析中的应用

APPLICATION OF 3-D PML ABSORBING BOUNDARY CONDITIONS TO THE ANALYSIS OF MICROSTRIP DISCONTINUITIES 

将完全匹配层 (PML )吸收边界条件从求解二维 TE/TM模问题推广到求解三维混合模传输线问题 .通过对各种三维微带线不连续性结构散射特性的计算表明 ,文中给出的电磁 PML 吸收边界条件保持了二维情况下宽带、高精度的优点 ,在复杂结构的 FDTD分析中具有重要的实用意义 .

The perfectly matched layer (PML) absorbing boundary conditions were extended from 2-D TE/TM modes problem to the case of 3-D hybrid modes transmission problem. Scattering characteristics of 3-D discontinuity structures in microstrip lines were successfully investigated. Numerical results show that the presented 3-D PML absorbing boundary condition maintains the advantage of wide band and high accuracy of ordinary 2-D PML. This technique can be further used in the FDTD analysis for complicated structures.