Analysis of Omnidirectional Waveguide Slot Antennas with Dielectric Radome

In this paper, the method of moments (MoM) is employed to solve the combined field integral equation (CFIE) for characterizing slotted waveguide antenna covered by a dielectric radome. Different from those existing practical examples discussed in literature, these structures consist of mixed conducting and homogeneous dielectric objects. Both basis functions and testing functions are chosen as the well-established Rao-Wilton-Glisson (RWG) basis functions. Effects of the radome on the slotted antenna´s radiation patterns are analyzed and discussed.