A wideband dual-polarized antenna with high isolation is presented. Four printed quadrant planar folded dipole placed above a U-shaped reflector are adopted as the main radiation elements. Curved slots cut on the planar folded dipole are used to reduce the size of the antenna. Parameter is studied, and the values are adjusted in order to obtain wideband and compact properties. Measured results show that the antenna achieves a VSWR < 2.0 from 1.64-2.33 GHz. The isolation between the two polarizations is better than 29.5 dB. The radius of the quadrant planar folded dipole is only 34 mm (about 0.18 wavelength at 1.64 GHz).
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