Time-domain investigation on ribbon cable-induced transient coupling into enclosure

A hybrid time-domain method is proposed for characterizing electromagnetic interference (EMI) signals in some composite structures with two-wire ribbon cable transmission lines, metallic enclosures, and even lumped active devices involved. In order to fast capture the inner EMI signals induced, Finite Difference Time-Domain (FDTD), and multi-conductor transmission lines (MTL) methods are combined together and implemented successfully. Numerical investigation is carried out to show the induced current, voltage, and enclosure shielding effectiveness of some practical geometry with metallic enclosure and ribbon cables, and even a cable networks.