Abstract
An improved flnite-difierence time-domain (FDTD) method is proposed for predicting transient responses of coaxial cables which are placed in an electrically large metallic cabin with arbitrary slots and circular windows on its wall. By integrating nodal analysis, multi-conductor transmission line (MTL) equation and FDTD method, we are able to accurately capture electromagnetic interference (EMI) efiects on the cables. Our developed algorithm is verifled by calculat- ing frequency-dependent transfer impedance of coaxial cables together with induced currents. Numerical calculations are further performed to show the near-end coupled current responses of braided and tubular cables, respectively, and the efiects of incident directions and polar- izations of the illuminated electromagnetic pulse are both taken into account.
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