SPICE models of barrier compared to measured data

SPICE models of electromagnetic zone barrier are devised. The models are based on data from 2D and 3D Maxwell equation solvers. A transfer impedance approach modeled incident electromagnetic waves in SPICE. Test systems using D-sub connectors, passive surface mounted filters and encapsulation were designed. Test system verification measurements were made in a fully anechoic chamber. The coupling through the zone barriers was measured. Good agreement was found between simulated and measured data.