Patent ID: 7167129

Claim:
A patch antenna array apparatus, comprising: a) a unitary first dielectric substrate having a top and a bottom surface and said unitary first dielectric substrate comprises a material selected from the group consisting of Teflon and Duroid; b) an array of feed network elements provided on said bottom surface of said first dielectric substrate; c) an array of patch antenna elements provided on said top surface of said first dielectric substrate, wherein said array of patch antenna elements and said array of feed network elements are respectively provided on said top surface and said bottom surface of generally oppositely facing surfaces of said first dielectric substrate, and wherein each element of said array of patch antenna elements is superposed and aligned over a single element of said feed network elements; and d) a second dielectric substrate having a top and a bottom surface and said second dielectric substrate comprises a material selected from the group consisting of Teflon and Duroid, wherein no electrically conductive material is provided on said top surface of said second dielectric substrate, and wherein the top surface of said second dielectric substrate is bonded to the bottom surface of said first dielectric substrate; and e) an electrically conductive ground plane provided on said bottom surface of said second dielectric substrate.