多层集成三维微波结构的全波分析

A Generalized Algorithm for Simulation of Multilayered 3D Microwave Structures

本文基于三维频域有限差分法 (FDFD)建立了多层微波集成无源电路及互连结构的全波分析通用软件 .对一些典型的无源器件 ,例如微带滤波器和通孔的S参数的全波分析结果与有关文献对比一致 ,验证了该方法的正确性 .在结构离散化过程中采用了非均匀网格剖分并且在网格截断边界上联合采用了三种吸收边界条件 ,以最大限度地压缩形成的稀疏矩阵的阶数 .对稀疏矩阵方程采用压缩存储技术和快速迭代解法 ,以有效地减少所需内存和计算时间 .

A generalized algorithm for the simulation of passive components in multilayered MICs is presented based on the 3D FDFD(Frequency Domain Finite Difference) method.The method is used to calculate S parameters of passive components such as microstrip filters and transitions,and is proved to be accurate and reliable compared with the reported data.In the algorithm,non uniform meshes and three kinds of ABCs are adopted to reduce the order of the final sparse matrix equation,and compressed storage and fast iterative solver are applied to solve the sparse matrix equation.