用时域变换的方法计算微带线的有效介电常数

使用了各向异性的PML吸收边界条件来截断时域有限差分网格，对具有匹配负载的微带线中的电磁波的传播进行了模拟，并通过时域变换来计算微带线的有效介电常数，首次把各向异性的PML吸收边界 数值模拟终端负载以及时域变换等技术结合起来，引入到有关微带线的计算中来，以替代分别用完全电壁和守全磁壁进行两次计算的边界条件，从计算结果看，该结果同分别使用完全电壁和完全磁壁进行两次计算的边界条件所得的结果符合得很好，并且在计算上更简洁。可以看出各向异性的PML吸收边界条件对用时域近似这类方法来解决微带线问题非常适用。

Calculation of effective perittivity of microstrip with time-domain transform method

In this paper, we use PML to truncate the finite difference time domain (FDTD) lattices and simulate the propagation of EM wave in microstrip. From time domain transform, we calculate effective permittivity of microstrip. We integrate PML boundary condition and numerical simulation technique to replace the electric wall and magnetic wall boundary condition. The result has shown the advantage of this ABC. With this paper, we can see that PML is the suitable ABC for computing different microstrip problems.