Patent ID: 8854265

Claim:
A patch antenna comprising: a ground plane base; an L-shaped feed structure comprising a pin extending from the ground plane base and a stub substantially perpendicular to the pin; and a laminate structure attached to the stub of the L-shaped feed structure, the laminate structure comprising a substrate layer, a metal layer and a clearance gap, the substrate layer having a bottom surface and a top surface, the metal layer disposed on a portion of the top surface of the substrate layer forming a patch, the stub attached to the bottom surface of the substrate layer, the clearance gap located around the pin of the L-shaped feed structure in proximity of the metal layer of the laminate structure at the top of the surface; wherein a matching network is formed by the clearance member around the pin on the top surface and the stub on the bottom surface in which the clearance member around the pin effectively decreases shunt inductance and reduces a series capacitance at a feed point and the stub member reduces the shunt inductance close to the feed point to enable a 50 ohm wideband operation.