Finite-Discrete Method of Electromagnetic Oscillations Excitation Analysis in Resonators with Electrically Inhomogeneous Filling

Problem of electromagnetic field computational analysis in closed volume taking into account field source is considered. Excitation of rectangular cavity resonator filled with electrically inhomogeneous in one direction media is investigated. It is shown that in this case the task of field calculation is reduced to the system of one-type inhomogeneous differential equations with variable coefficients. A technique of direct finding of accurate solutions of these equations in mesh nodes by values of a source function in the same nodes for functions with finite spectrum is proposed. Given technique reduces the task to solution of discrete matrix equation with boundary conditions for zero functions and derivatives.