An Electromagnetic Topology Method for Cable Interactions Using a Radiating Dipole at Apertures

Simulations, based on electromagnetic topology, have been carried out to characterize external field penetration through apertures and their interactions with a cable linking two personal computers. Experimentally determined scattering parameters for the cable linking the two computers have been used in the study. The simulation involves coupling of the generated aperture fields with the cable by treating aperture fields as distributed source elements. The transfer function for the topological network is generated by assuming a short circuited radiating dipole antenna at the aperture with finite-difference time-domain (FDTD)-created driving sources. Results show that the effects on cables depend on the nature of the external pulse, the scattering parameter, the aperture, and the cable response. The simulation has been performed using an electromagnetic topology-based code, CRIPTE, which allowed us to analyze coupling of the field with multiconductor transmission lines.