Antenna array element with dual polarization, antenna array including antenna array element and electronic device including antenna array

An antenna array including a plurality of antenna array elements, wherein an antenna array element of the plurality of antenna array elements comprises:

• 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 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;
• and
• a plurality of electromagnetic band gap (EBG) elements located in a boundary area of the antenna array element.

An electronic device comprising an antenna array including a plurality of antenna array elements, wherein an antenna array element of the plurality of antenna array elements comprises:

• 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 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;
• and
• a plurality of electromagnetic band gap (EBG) elements located in a boundary area of the antenna array element.