Dual-Wideband Dual-Polarized Dipole Antenna With T-Shaped Slots and Stable Radiation Pattern

A dual-wideband dual-polarized dipole antenna for base-station applications is proposed. This antenna consists of a pair of crossed dipoles, a circular director, and a metallic reflector. The crossed dipoles are fed by two 50 Ω coaxial cables to achieve ±45° polarized radiation over a wide frequency band, while four T-shaped slots are cut in the dipole arms to produce two wide operating bands. The...