基于传输线方程的多根非平行传输线串扰分析  

Transmission line equation based crosstalk analysis of multiconductor non-parallel transmission line

作　　者：刘鑫[1] 钟选明[1] 叶志红[1] 廖成[1] LIU Xin ZHONG Xuanming YE Zhihong LIAO Cheng(Institute of Electromagnetic Theory and Microwave Technology, Southwest Jiaotong University, Chengdu 610031, China)

机构地区：[1]西南交通大学电磁场与微波技术研究所,四川成都610031

出　　处：《现代电子技术》2017年第1期163-166,共4页Modern Electronics Technique

基　　金：国家重点基础研究发展计划基金(2013CB328904)

摘　　要：非平行结构的传输线在电力电子系统中普遍存在,当其上通有电压和电流信号时,会在周围传输线上产生串扰响应。采用时域传输线方程建立多根非平行传输线之间的串扰模型,结合FDTD方法,分析在脉冲集总源激励下受扰导线始端和终端负载上的串扰电压响应特性,将其结果与仿真结果对比,验证了该方法的正确性。研究结果表明,非平行结构中受扰线始端和终端负载上的串扰电压响应随着传输线离地面高度的增大而增大,随着传输线之间夹角的增大而变小,且减小的趋势逐渐减弱,从而为线缆间的串扰防护提供了参考依据。The transmission line with non-parallel structure is prevalent in the power electronic system, and the crosstalkresponse will be produced around it when the voltage and current signals are transmitted through it. The time-domain transmis-sion line equation is used to establish the crosstalk model among the multiconductor non-parallel transmission lines. The FDTDmethod is combined to analyze the crosstalk voltage response characteristics of the disturbed conductor beginning and terminalloads under the pulse lumping source excitation. The results are contrasted with the simulation results to verify the validity of themethod. The research results show that the crosstalk voltage response of the disturbed conductor beginning and terminal loadsin non-parallel structure is increased with the height increasing of the transmission line, decreased with the included angle in-creasing between the transmission lines, and the decrease trend is decayed gradually, which provides a reference for the cross-talk protection among cables.

关 键 词：非平行传输线 时域传输线方程 串扰响应 FDTD 

分 类 号：TN811.34[电子电信—信息与通信工程]