| CPC H01Q 9/045 (2013.01) [H01Q 1/48 (2013.01); H01Q 1/521 (2013.01)] | 9 Claims |

|
1. An antenna device, comprising:
a substrate, having an upper surface, a side surface and a lower surface, wherein two opposite ends of the side surface are connected to the upper surface and the lower surface, respectively;
two T-shaped radiation portions, located on the upper surface of the substrate;
two feeding portions, connected to the two T-shaped radiation portions, respectively, wherein the two feeding portions are located on the side surface of the substrate; and
an isolation structure, located on the upper surface of the substrate, wherein the isolation structure is disposed between the two T-shaped radiation portions, and comprises a plurality of isolation units, the plurality of isolation units are arranged along a straight line, and any two of the plurality of isolation units that are adjacent are connected to each other, each of the plurality of isolation units comprises a square portion and a plurality of T-shaped portions that are connected to different sides of the square portion, respectively, and each of the plurality of T-shaped portions comprises a connection part, a first protrusion part and a second protrusion part, the connection part is connected to the square portion, the first protrusion part and the second protrusion part are connected to the connection part, the first protrusion part and the second protrusion part are perpendicular to the connection part and protrude from the connection part along opposite directions, respectively, and a length of the first protrusion part is different from a length of the second protrusion part.
|