Patent ID: 7046203

Claim:
An antenna device, comprising: a dielectric substrate provided on a ground conductor; a plurality of soldering lands arranged on the dielectric substrate such that the dielectric substrate is disposed between the soldering lands and the ground conductor; a feeding soldering land disposed on the dielectric substrate and connected to a feeding circuit; a radiating conductor plate composed of a metal plate arranged above the dielectric substrate with a predetermined gap therefrom; and a plurality of leg pieces and a feeding metal piece formed by folding back a plurality of places excluding a central portion of the radiating conductor plate toward the dielectric substrate, wherein the feeding metal piece is soldered to the feeding soldering land, the plurality of leg pieces is soldered to the corresponding soldering lands to support the radiating conductor plate, and the radiating conductor plate is grounded via a capacitance generated between the plurality of soldering lands and the ground conductor.