Heterogeneities in antenna cavity and the scattering properties of some special antennas. Numerical analysis, part I

Abstract

The aim of the work was carrying out the numerical analysis of influence of dielectric insertions and additional cylindrical obstacles in the cavity of cylindrical antennas with a finite number of longitudinal slots on technical characteristics of the described devices. For this aim implementation, in this work, mathematical models developed on the base of boundary singular integral equations were applied to E-polarized plane wave scattering. Discretization of the derived integral equations was carried out by the method of discrete singularities. With the help of the obtained discrete models, the authors have plotted the graphs for dependency of total diffusion cross-section on additional obstacle size. Computations were done for different antenna cavity fillings.