Dual-polarized Bidirectional-beam Dielectric Waveguide Antenna

Abstract

This paper presents a dual-polarized bidirectional-beam dielectric waveguide antenna using an image guide type dielectric waveguide suitable for a small base station antenna. This antenna is easy to fabricate because the image guide is constructed by a rectangular dielectric rod on the ground plane and does not use plated metal sheets. Dual polarization operation is considered for the polarization diversity. The fabricated antenna has good performances. Also, measured performances agree with the calculated ones.