Pseudo-Image Method for Computing the Electromagnetic Field that Penetrates into a Cavity

摘要

A solution for electromagnetic coupling through an aperture in an arbitrarily shaped perfect conductor is obtained by the generalized network formulation for aperture problems in conjunction with a method called the pseudo-image method. The theory developed is applied to a TM curved cylindrical surface with a narrow or a wide slot. The field in an aperture in a circular cylindrical surface with a narrow or a wide slot. The field in an aperture in a circular surface is calculated by the pseudo-image method, by a method without a pseudo-image, and by EFIE method in which only an electric current is used. The aperture field calculated by the pseudo-image method is judged to be the most accurate because it agrees best with a Fourier series solution.