Wideband Dual-Polarization phased-array antenna With High Isolation

A wideband dual-polarization antenna with high isolation for the phased array applications has been proposed in this article. In order to meet the wideband and high isolation requirement, the array element uses dipole pairs with narrow-slot structure. The dual-polarization characteristic is achieved by exciting two orthogonal dipole patches. The working band of the antenna array is from 8 to 11 GHz with a relative bandwidth of 40%. The simulated results show that the active VSWR is less than 1.5 and 2.5 in the band 8 ~ 12 GHz while the range of scan angle is 0° and ±45°. The port isolation is below -30dB and the cross-polarization is below -30 dB across the whole band.