A Broadband Low-Profile Dual-Polarized Antenna

In this article, a broadband low-profile dual-polarized antenna is proposed within a height of 0.07λ
₀
(λ
₀
is the wavelength of corresponding lowest operating frequency). The proposed antenna consists of a pair of orthogonal loop dipoles, a metal ground and four parasitic patches. A prototype of the proposed antenna is constructed and test. Measured results show that the antenna achieves a S11<; -10dB from 750-870 MHz and 1.72-2.84 GHz. The isolation between the two polarization is better than 40 dB.