电磁场数值模拟TLM算法及其应用

传输线矩阵（TLM）算法是基于Huygens的波传播模型，与计算机结合起来后，成为一种强有力的三维时域电磁场数值仿真算法，在1971年TLM被首次提出以后，便得到不断的改进，从二维到三维，从扩展型结点到凝缩型结点，从时域TLM到频域TLM，而其应用也从最初的处理电磁场问题发展到对微波电路的模拟，高速IC的设计，以及处理光学，机械学，热学和声学问题，本文详细介绍了二维、三维空间的TLM算法，扩展型结点和几种改进的对称凝缩结点，阐述了TLM在各领域的应用，最后还简单介绍了我们完成的工作。

Transmission Line Matrix Method and its Applications

In this paper the Transmission Line Matrix (TLM) modeling for electromagnetic (EM) problems and its current development is reviewed. Based on the theory of light propagation originated by Huygens in the seventeenth century, TLM has developed into a powerful tool for numerical analysis of EM wave propagation since its presence in 1971. It is now gaining increasing interest in time-domain simulation of microwave circuits and high-speed VLSI physical design. The basic TLM algorithms are described for EM wave propagation simulation in 2D and 3D media. The TLM framework of extended-node and several improved symmetrical framework of condensed-node are discussed. Typical applications to EM problems are reviewed and its current development is introduced. Practical TLM-based simulators for microwave circuits and high-speed digital circuits are presented.