Patent ID: 7924237

Claim:
An antenna device, comprising: a substrate having a top surface and a lower surface; a ground layer disposed on the lower surface, comprising: a first ground portion; a second ground portion; and a third ground portion separated from the first ground portion by a first slot and from the second ground portion by a second slot, wherein the first slot has a first segment and a second segment which together form a first angle, and the second slot has a third segment and a fourth segment which together form a second angle; a first feeding element and a second feeding element both disposed on the top surface, and respectively comprising a first conductive feeding line and a second conductive feeding line, the first conductive feeding line crossing over the first slot and passing through the substrate to be electrically connected to the first ground portion, and the second conductive feeding line crossing over the second slot and passing through the substrate to be electrically connected to the second ground portion; a first control circuit and a second control circuit both disposed on the top surface, and respectively comprising a first wire and a second wire, the first wire crossing over the corresponding position of the first segment of the first slot on the top surface and passing through the substrate to be electrically connected to the first ground portion, and the second wire crossing over the corresponding position of the second segment of the first slot on the top surface and passing through the substrate to be electrically connected to the first ground portion; and a third control circuit and a fourth control circuit both disposed on the top surface, and respectively comprising a third wire and a fourth wire, the third wire crossing over the corresponding position of the third segment of the second slot on the top surface and passing through the substrate to be electrically connected to the second ground portion, and the fourth wire crossing over the corresponding position of the fourth segment of the second slot on the top surface and passing through the substrate to be electrically connected to the second ground portion.