Dual-polarized omni-directional antenna array based on cavity-slot elements

In this work, a cavity-slot, dual-polarized linear-cylindrical antenna array is proposed. The array is composed of 3 horizontal slots and 4 vertical slots at 3 GHz. The mutual coupling between a vertical slot and a horizontal slot is less than 30 dB, the average omni level ripple is 1 dB, and the average cross-polarization in the azimuth is less than 25 dB.