连接器的端接形式对电磁干扰的影响

基于对敏感接插件的干扰主要来自最紧邻接插件的假设,提出了连接器内电磁干扰的模型,对模型的可靠性进行了分析。模型内接插件间的互耦参数用矩量法进行计算,根据模型的特点采用三角基展开而简化计算过程。对非敏感接插件两端的典型连接进行模拟,以频域耦合参数和时域波形给出敏感件上可能出现的最大与最小干扰情况,对于正确使用连接器、降低电磁干扰有参考价值。

The Influence of Termination on EM Disturbance in Connectors

Base on the assumption that disturbance to a critical pin is mainly caused by the nearest surrounding pins, a model of crosstalk in connector is given, the validity of the model is discussed. Method of moment is used in the determination of per-unit-length parameters. Harmonic series expansion functions are selected which converge more rapidly than delta function expansion and simplified the simulation. Extreme terminal conditions of connector are studied, results are given in frequency domain coupling factors and time domain waveforms, simulation results may be helpful for the usage of connector correctly.