A Compact Wideband Dual-Polarized Dipole Antenna with High-Isolation

Abstract

This paper presents a compact wideband dual-polarized dipole with high isolation. The proposed antenna makes use of two T-shaped orthogonal oscillators to realize the dual-polarization radiation. The wideband impedance matching is realized by the coaxial slotted balun. To reduce the size of the designed dipole, the arms of the oscillators are bent down. By optimizing various design parameters affecting antenna performances, the simulation results show that the relative impedance bandwidths of two ports are 32.1% (11.65GHz~16.1GHz) and 31.3% (11.45GHz~15.7GHz), respectively, and the port isolation is more than 45 dB, which indicates that the proposed dipole antenna has good dual-polarized radiation characteristics.