Patent ID: 7148847

Claim:
An antenna device, comprising: a first radiating conductive unit arranged above a grounding conductor so as to be substantially parallel and opposite to the grounding conductor; a feeding conductive unit that extends orthogonally from an outer edge of the first radiating conductive unit to be connected to a feeding circuit; a second radiating conductive unit arranged above the grounding conductor so as to be substantially parallel and opposite to the grounding conductor and adjacent to the first radiating conductive unit with a slit interposed therebetween, the second radiating conductive unit being configured approximately in the same form as that of the first radiating conductive unit; and a shorting conductive unit that extends orthogonally from an outer edge of the second radiating conductive unit to be connected to the grounding conductor, wherein the feeding conductive unit extends from an outer edge of the slit side of the first radiating conductive unit; and the shorting conductive unit extends from an outer edge of the slit side of the second radiating conductive unit, wherein the shorting conductive unit is disposed in the vicinity of the feeding conductive unit and is electromagnetically coupled with the feeding conductive unit.