Plane-Wave Coupling to a Twisted-Wire Pair Above Ground

被引:80
作者
Pignari, Sergio A. [1 ]
Spadacini, Giordano [1 ]
机构
[1] Politecn Milan, Dipartimento Elettrotecn, I-20133 Milan, Italy
关键词
Common (CM) and differential mode (DM); CM rejection ratio; field-to-wire coupling; transmission-line (TL) model; twisted-wire pairs (TWP); TERMINAL RESPONSE; MODEL;
D O I
10.1109/TEMC.2010.2061855
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A transmission-linemodel is developed for predicting the response of a twisted-wire pair (TWP) circuit in the presence of a ground plane, illuminated by a plane-wave electromagnetic field. The twisted pair is modeled as an ideal bifilar helix, the total coupling is separated into differential-(DM) and common-mode (CM) contributions, and closed-form expressions are derived for the equivalent induced sources. Approximate upper bounds to the terminal response of electrically long lines are obtained, and a simplified low-frequency circuit model is used to explain the mechanism of field-to-wire coupling in a TWP above ground, as well as the role of load balancing on the DM and CM electromagnetic noise induced in the terminal loads.
引用
收藏
页码:508 / 523
页数:16
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