Patent ID: 7675466

Claim:
An antenna, comprising: a planar substrate comprising an antenna array comprising an array of planar radiating elements and a feed network formed on a surface of the planar substrate; wherein the planar radiating elements include a first pair of patch radiators including a first patch radiator having a first edge, and a second patch radiator having a second edge, wherein the first and second patch radiators are arranged such that the first and second edges are adjacent edges that are spaced apart and face each other; wherein the planar radiating elements include a second pair of patch radiators including a third patch radiator having a third edge, and a fourth patch radiator having a fourth edge, wherein the third and fourth patch radiators are arranged such that the third and fourth edges are adjacent edges that are spaced apart and face each other; wherein the feed network comprises: a first balanced coplanar strip line having first and second signal lines; a first conductive strip connecting the first signal line to the first edge of the first patch radiator and to the third edge of the third patch radiator; and a second conductive strip connecting the second signal line to the second edge of the second radiator patch and to the fourth edge of the fourth patch radiator.