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为了研究传输线之间的串扰问题,基于传输线时域有限差分(FDTD)法,对二平行线模型的传输线串扰时域响应问题进行了仿真研究。通过在二平行线模型的干扰线端口加入上升沿为ns级的梯形波,仿真分析了二平行线模型各个端口的电压波形;同时,基于实验室研究设备,对共地平行传输线间的串扰电压进行了实验研究,并将部分实验结果与理论仿真结果进行了比较分析。结果显示:仿真波形的振荡与幅度和测量结果的振荡与幅度基本一致,仿真的脉冲宽度略大于测量脉冲宽度,仿真结果峰值略大于测量峰值。这说明传输线时域有限差分(FDTD)法在分析ns级上升沿的传输线耦合问题时是有效的。
In order to study the crosstalk problem between transmission lines, the time-domain crosstalk response of two parallel lines model was simulated based on the FDTD method. By adding the trapezoidal wave with ns rising edge to the interference line port of the two parallel lines model, the voltage waveforms of each port of the two parallel lines model are simulated and analyzed. At the same time, based on the laboratory research equipment, the crosstalk voltage An experimental study was carried out, and some experimental results and theoretical simulation results were compared and analyzed. The results show that the oscillation and amplitude of the simulation waveform and the amplitude and amplitude of the measurement result are basically the same. The simulated pulse width is slightly larger than the measured pulse width. The peak value of the simulation result is slightly larger than the measured peak value. This shows that the finite-difference time-domain transmission (FDTD) method is effective in analyzing the transmission line coupling problem at ns rising edge.