3-D Radome-Enclosed Aperture Antenna Analyses and Far-Side Radiation

Abstract

Abstract—Physical optics integral representations of the fields are given for the 3-D model of the aperture antenna with specified ampliphase excitation law enclosed in a radome. The problem is reduced to finding fields of a plane wave diffracted on the “sym- metrized” radome. This model is used for calculations of radiation patterns and for analyses of far-field radiation. Peculiarities of the ray pattern and caustics are analyzed using geometrical optics (ge- ometrical theory of diffraction) method. The contribution of the stationary phase points in the aperture to the far-side radiation has been investigated. Results of numerical calculations are presented