TMFABC及其在传输线参数提取中的应用

本文发现将一阶Ｍｕｒ吸收边界条件分别应用到ｘ－ｔ，ｙ－ｔ，ｚ－ｔ平面上两相邻对角节点时，电磁波的反射误差可以互相抵消，从而提出了二重一阶Ｍｕｒ吸收边界条件（ＴＭＦＡＢＣ）。ＴＭＦＡＢＣ可以很方便地应用到多层结构上去，吸收效率比一阶Ｍｕｒ吸收边界条件及其超吸收算法明显提高，尤其在低频端的效果更好，而且ＴＭＦＡＢＣ对衰减波的吸收也很有效。我们将ＴＭＦＡＢＣ移植到一个时域有限差分（ＦＤＴＤ）程序中，用来

TMFABC and Its Application to Parameter Extraction of Transmission Lines

It is found that the reflection error of Mur's first-order absorbing boundary condition can be cancelled effectively by applying the ABC twice to an electromagnetic field on two diagonally neighboring nodes on the x-t, y-t and z-t planes, according to which a twofold Mur's first-order ABC(TMFABC) is developed. It is very convenient to apply TMFABC to multilayer structures. The absorption efficiency of TMFABC is obviously better than that of Mur's first-order ABC and its super algorithm,especially at lower frequencies. A FDTD software using TMFABC has been written to extract the circuit model parameters of transmission lines in high-speed integrated circuits.