一种有损非均匀传输线时域分析方法

提出利用等效电路法解决电磁脉冲注入下有损非均匀传输线及其网络端接非线性负载的时域响应问题。采用分段逼近级联方法建立了有损非均匀传输线的等效电路模型。利用设计的快沿电磁脉冲源对有损非均匀微带线端接电阻、瞬态抑制二极管的响应进行了试验和仿真对比分析，验证了该等效电路模型的正确性和解决非线性负载响应问题上的有效性。通过与FDTD法对更复杂的有损非均匀传输线、不等长有损非均匀传输线、有损非均匀传输线网络的仿真结果和计算机运行时间进行对比分析，进一步验证了该等效电路法的正确性以及在解决有损非均匀传输线问题上的普遍适用性和高效性。

Equivalent circuit model for transient analysis of lossy non-uniform transmission line network

The equipment circuit method is introduced to obtain the transient response of the lossy non-uniform transmission line network with nonlinear terminations. After modifying the equipment circuit model of the lossy transmission line, a lossy non-uniform transmission line equivalent circuit model is introduced in this paper. Meanwhile, the transient responses for a lossy microstrip line with linear and nonlinear terminations excited by the designed electromagnetic pulse source are simulated. The results of the simulations and the experiments are consistent with each other, which verifies that the models are correct. A typical lossy non-uniform transmission line, a typical unequal length lossy non-uniform transmission line, and a typical lossy non-uniform transmission line network are simulated. The simulation results are in good agreement with those of the finite difference time domain(FDTD) method and the conventional lumped method.