US Patent 7796085 Antenna and wiring board

An antenna 1 which is incorporated in a multilayer wiring board 2 has: radiating elements 11-1, 11-2, 11-3, and 11-4 which are laid on faces of A-, B-, and C-layers of the wiring board 2, respectively; power supplying portions 12-1, 12-2, 12-3, and 12-4 which are laid on the faces of the layers, respectively to supply an electric power to the radiating elements 11-1, 11-2, 11-3, and 11-4; short-circuiting portions 13-1, 13-2, 13-3, and 13-4 which are laid on the faces of the layers, respectively to ground the radiating elements 11-1, 11-2, 11-3, and 11-4; and a connecting portion 14 which penetrates the A-, B-, and C-layers of the wiring board 2, and through which the power supplying portions 12-1, 12-2, 12-3, and 12-4 are electrically connected to each other.