Patent ID: 7812769

Claim:
A patch antenna comprising: a dielectric substrate having a circular or rectangular patch conductor disposed on a front surface thereof and a ground conductor disposed on a rear face thereof, a penetrating hole penetrating said dielectric substrate, and a coaxial track having a central conductor inserted into said penetrating hole, and electrically connected to a feeding point on said patch conductor and electrically insulated from said ground conductor, and an outer conductor covering an outer surface portion of said central conductor extending up to the rear face of said dielectric substrate, and electrically connected to said ground conductor, wherein said patch antenna further includes: a plurality of connection auxiliary means electrically connected to an end portion of said central conductor on a side of said patch conductor and radiately extending toward an edge portion of said penetrating hole on a side of said patch conductor; and a connecting means for electrically connecting said plurality of connection auxiliary means and said edge portion, wherein said plurality of connection auxiliary means is a gear-shaped conductor.