Abstract

This paper presents a brief theoretical discussion on the issue of the wire-grid representation of surfaces using the numerical electromagnetics code (NEC). Different approaches for the determination of the parameters (in particular, the segment radii) of a wire-grid representation of a metallic surface are presented. These approaches are tested vs experimental data on electric field distribution inside a transverse electro-magnetic (TEM) cell. The obtained data are compared to simulation results showing reasonable agreement for models featuring rectangular meshes

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