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针对双绞线的特殊结构,提出了一种分析单线与双绞线时域串扰特性的简易方法。将单线和双绞线一起看作一组均匀多导体传输线按特定方式的级联,应用广义多端口网络概念,建立组间的电压控制方程,每一组多导体传输线采用时域有限差分方法进行求解,进而确定单线与双绞线的串扰电压时域波形。仿真结果与实验结果吻合较好,验证了该时域方法的正确性。
Aiming at the special structure of twisted pair, a simple method to analyze the characteristics of time-domain crosstalk in single-wire and twisted-pair is proposed. Considering the single-wire and twisted-pair wires as a group of uniform multi-conductor transmission lines in a cascaded manner, a generalized multi-port network concept is used to establish the voltage control equations among groups. Each group of multi-conductor transmission lines adopts the finite-difference time-domain Solve, and then determine the single-and twisted-pair crosstalk voltage time-domain waveform. The simulation results agree well with the experimental results, which verify the correctness of the time-domain method.