Design of a Dual-Polarized Crossed Dipole with Broadband and Broad Beam width

In this paper, a dual-polarized crossed dipole with broadband and broad beam width is proposed. The crossed dipole fed by microstrip baluns consists of two printed dipoles which are placed vertically across the metal pedestal. With this configuration, the simulated and measured impedance bandwidth of the proposed antenna covers 8 GHz to 12 GHz ($\text{VSWR} \leqslant 3.0$). By setting the phase difference between the two ports to 90°, left circularly polarized pattern and right circularly polarized pattern can be obtained. Within the bandwidth, the proposed antenna has wide beam width ($\geqslant 130^{\circ}$) in H-plane. Measured results and simulated results are also obtained and discussed at the end of this paper.