Transient electromagnetic coupling to a cavity with imperfectly conducting walls

A computational model for transient electromagnetic field coupling into a metallic enclosure (cavity) is developed. The model is based on a finite element technique that uses the Galerkin variant of the method of moments. The expansion and weighting functions are piecewise-linear relative to a solid element with eight nodes. The model is fully three-dimensional and accounts for the presence of a thin, perfectly conducting wire that spans opposite walls of the enclosure. Some numerical results based on the model are presented.<>