An antenna array element with dual polarization is provided. The antenna array element includes a multilayer printed circuit board (PCB), a first patch placed on an inner layer of the multilayer PCB, a second patch placed on an upper layer of the multilayer PCB and coupled by electromagnetic field with the first patch, two U slots placed orthogonally on the multilayer PCB layer under the first patch, feedlines placed on one PCB layer under the U slots orthogonally to each other and configured to excite the U slots, ad a plurality of electromagnetic band gap (EBG) elements located in a boundary area of the antenna array element.