Patent ID: 6727852
Filing Date: 2004-04-27
Classification: H01Q

Abstract:
A dual band microstrip antenna, comprising:a dielectric substrate; a ground plane attached to a bottom surface of the substrate; a first and a second radiating patches each separately elevated an appropriate height above and parallel to a top surface of the substrate; a first and a second conductive posts providing the function of elevating the first and second radiating patches, respectively, above the top surface of the substrate, while also electrically connecting the first and second radiating patches, respectively, with the ground plane; and a first and second feeder cables both including, respectively, a first and second inner conductors, each surrounded by an insulative layer, and a first and second outer conductors covering the insulative layer; wherein the first and second inner conductors are each respectively electrically connected to said first and second radiating patches and the first and second outer conductors are electrically connected to the ground plane.