接地平面电流对信号电缆的干扰分析
Coupling Analysis of Common Ground Impedance Interference to
Signal Transmission Cable
摘要 从编织网屏蔽电缆的转移阻抗和转移导纳出发,建立了信号传输电缆共地阻抗的耦合模型。通过仿真计算,定量分析了电缆共地阻抗干扰对电缆的耦合,实验验证了计算的准确性和可靠性,并提出了共地阻抗对电缆的耦合控制措施。
关键词 共地阻抗干扰;电缆;仿真
Abstract Based on transfer impedance and transfer admittance of the meshed shielding
cable, the common ground impedance coupling model of signal transmission cable is
established. The coupling to the cable induced by common ground impedance
interference is analyzed quantitatively through simulating calculation, which is verified
by the experiments for accuracy and reliability. The control measures about the
coupling of common ground impedance interference to the cable are also proposed.
Keywords Common ground impedance interference; cable; EMC
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