Patent ID: 7768456

Claim:
An antenna device comprising: a dielectric substrate; a semiconductor chip disposed on the dielectric substrate; a metallic plate having a band-like shape with a constant width that is wider than diameters of first and second wires, formed on the dielectric substrate so as to be approximately parallel to at least one side of the semiconductor chip; first and second feeders formed on the semiconductor chip; the first wire having first and second ends, the first end being connected with the first feeder and the second end being connected with the metallic plate; and the second wire having third and fourth ends, the third end being connected with the second feeder and the fourth end being connected with the metallic plate, wherein a distance L 1 between the first end of the first wire and the third end of the second wire is smaller than a distance L 2 between the second end of the first wire and the fourth end of the second wire (L 1 <L 2 ).