Computation of interference in cables close to metal surfaces

Shielded single-conductor cables are considered to be illuminated by arbitrary electromagnetic fields. The analysis of internal interference voltages and the realistic simulation of such cables on finite metallic surfaces means a challenge to numerical computation techniques. To overcome the arising difficulties a hybrid approach combining the method of moments (MoM) with the transmission-line theory (TL) has been developed. This paper examines how to simulate cables very close to metallic grounds and how to determine the voltages induced in the internal cable terminations. Questions on modeling, accuracy and ranges of validity are studied by several numerical examples