US 11,688,950 B2
Multisegment array-fed ring-focus reflector antenna for wide-angle scanning
Arun Kumar Bhattacharyya, Littleton, CO (US); Elie Germain Tianang, Aurora, CO (US); Alan Cherrette, Highlands Ranch, CO (US); and Jonathan James Bennett, Littleton, CO (US)
Assigned to LOCKHEED MARTIN CORPORATION, Bethesda, MD (US)
Filed by LOCKHEED MARTIN CORPORATION, Bethesda, MD (US)
Filed on Aug. 10, 2020, as Appl. No. 16/989,795.
Prior Publication US 2022/0045433 A1, Feb. 10, 2022
Int. Cl. H01Q 19/19 (2006.01); H01Q 15/16 (2006.01); H01Q 3/14 (2006.01); H01Q 5/35 (2015.01); H01Q 15/18 (2006.01); H01Q 3/26 (2006.01)
CPC H01Q 15/162 (2013.01) [H01Q 3/14 (2013.01); H01Q 3/2658 (2013.01); H01Q 5/35 (2015.01); H01Q 15/18 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A multisegment array-fed reflector antenna, the antenna comprising:
a feed array including a plurality of subarrays;
a multisegment reflector configured to reflect a plurality of beams of the feed array into a plurality of elevation angles;
a support structure coupling the multisegment reflector to the feed array and
a top panel comprising a plurality of electronically scanned array (ESA) subarrays and configured to radiate within an elevation angle range of 45 degrees to 90 degrees,
wherein:
the multisegment reflector includes two or more ring-focus parabolic segments, and
each ring-focus parabolic segment of the multisegment reflector comprises a parabolic surface extending along a circle around the support structure.