Patent ID: 7315288
Filing Date: 2008-01-01
Classification: H01Q

Abstract:
1. A dual polarization antenna array, comprising: a first array of continuous slots formed in a ground plane structure; a second array of continuous slots formed in the ground plane structure, said second array orthogonal to said first array to define a checker-board pattern of conductive pads in the ground plane structure; a first feed structure comprising a first periodically spaced set of probe feeds disposed behind the ground plane structure for exciting the first array of slots; a second feed structure comprising a second periodically spaced set of probe feeds disposed behind the ground plane structure for exciting the second array of slots; and an eletrically conductive back plane structure arranged behind the first and second sets of probe feeds such that the probe feeds are between the ground plane structure and the back plane structure, the back plane structure providing RF shielding; wherein each of the first and second feed structures comprises a balanced push-pull feed respectively coupled to each of the first and second sets of probe feeds and comprising a pair of feed lines driven in anti-phase.