Title :
Plane-Wave Coupling to a Twisted-Wire Pair Above Ground
Author :
Pignari, Sergio A. ; Spadacini, Giordano
Author_Institution :
Dipt. di Elettrotec., Politec. di Milano, Milan, Italy
fDate :
5/1/2011 12:00:00 AM
Abstract :
A transmission-line model 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.
Keywords :
electromagnetic coupling; equivalent circuits; resource allocation; transmission lines; twisted pair cables; CM contributions; DM contributions; TWP above ground; TWP circuit; closed-form expressions; common-mode contributions; differential-mode contributions; electromagnetic noise; equivalent induced sources; field-to-wire coupling; ground plane; ideal bifilar helix; load balancing; low-frequency circuit model; plane-wave coupling; plane-wave electromagnetic field; terminal loads; terminal response; transmission-line model; twisted-wire pair circuit; Approximation methods; Couplings; Delta modulation; Integrated circuit modeling; Load modeling; Moment methods; Wires; CM rejection ratio; Common (CM) and differential mode (DM); field-to-wire coupling; transmission-line (TL) model; twisted-wire pairs (TWP);
Journal_Title :
Electromagnetic Compatibility, IEEE Transactions on
DOI :
10.1109/TEMC.2010.2061855
