Electronic device
The present disclosure relates to an electronic device, and the electronic device may include a circuit board provided within a main body of the electronic device, on which a conductive layer made of a conductive material and a dielectric layer made of an insulating material are alternately laminated; at least one or more patch antennas disposed on the circuit board; a core layer located at a central portion inside the circuit board, and configured with any one of the dielectric layers; a ground layer disposed below the core layer; and an EBG structure located inside the circuit board in a symmetrical shape at the top and bottom with respect to the core layer, and the EBG structure restricts operating frequency signals radiated from the respective patch antennas from being interfered with each other.
1. An electronic device, comprising:
a circuit board provided within a main body of the electronic device and comprising alternating laminated layers of a conductive layer made of a conductive material and a dielectric layer made of an insulating material;
a plurality of patch antennas disposed at the circuit board;
a core layer disposed at a central layered portion inside the circuit board and comprising a dielectric layer;
a ground layer disposed below the core layer; and
electro-magnetic band gap (EBG) structures disposed inside the circuit board and configured to restrict interference between signals radiated from the plurality of patch antennas or reduce deformation of the circuit board due to pressure or temperature applied to the circuit board,
wherein the EBG structures are disposed at at least an upper portion, a lower portion, or both upper and lower portions of the circuit board with respect to the core layer, and
wherein the EBG structures are formed by a number of laminated layers of the circuit board.
2. The electronic device of claim 1 , wherein the conductive layer is formed with a same number of conductive layers at the upper portion and the lower portion with respect to the core layer.
3. The electronic device of claim 1 , wherein the EBG structures comprise a first EBG structure and a second EBG structure.
4. The electronic device of claim 3 , wherein the second EBG structure is spaced apart from the first EBG structure.
5. The electronic device of claim 3 , wherein the first EBG structure and the second EBG structure are located inside the circuit board.
6. The electronic device of claim 3 , wherein the first EBG structure and the second EBG structure are formed of a conductive material.
7. The electronic device of claim 1 , wherein each of the plurality of patch antennas comprises a plate-shaped first patch portion and a plate-shaped second patch portion arranged to be overlapped with each other and vertically separated by a predetermined distance inside the circuit board.
8. The electronic device of claim 7 , further comprising a feeding member electrically connected to the first patch portion or the second patch portion.