Disclosed is an integrated antenna array comprising a plurality of interleaved sub-arrays separately controllable and responding to either the same or separate frequency bands. Both arrays operate with substantially the same phase center and substantially within the same effective aperture. The first...http://www.google.com.tw/patents/US20030052828?utm_source=gb-gplus-share專利 US20030052828 - Co-located antenna array for passive beam forming
