同轴电缆串扰的仿真计算与测试

鉴于互连系统中电缆的电磁干扰问题,首先论述了由传输线理论对同轴电缆串扰的计算仿真,进而根据此模型自制了同轴电缆电磁耦合测试装置,测试若干结构参数对同轴电缆串扰电压的影响,得出了同轴电缆的串扰电压大小随电缆长度、干扰源电压和频率的增大而增大,最后比较仿真结果和测试结果,基本上达到了很好的一致性,此测试方法和结论对电气工程师测试和解决电缆串扰问题具有一定的实用价值。

Simulation and Testing of the Crosstalk of Coaxial Cable

Aiming at electromagnetic interference of cable in interconnected system,this paper simulated and computed the crosstalk of coaxial cable,based on the transmission line theory.Besides,a testing thingamy that can image electromagnetic coupling between coaxial cables was made,in the hope of testing the influence to voltage with different structural parameters,the data shows that crosstalk voltage of coaxial cable was proportional to length,voltage of interference source and frequency.Comparing the records,outcomes of simulation was ultimately consistent to that of test,this method and conclusion comes out to be useful for electrical engineer to test and solve crosstalk between cables.