Multisegment array-fed ring-focus reflector antenna for wide-angle scanning
AssigneeLockheed Martin Corporation
InventorsArun Kumar Bhattacharyya, Elie Germain Tianang, Alan Cherrette, Jonathan James Bennett
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Abstract
A multisegment array-fed reflector antenna includes a feed array consisting of a number of subarrays and a multisegment reflector to reflect multiple beams of the feed array into a number of elevation angles. A support structure couples the multisegment reflector to the feed array. The multisegment reflector includes two or more ring-focus parabolic segments, and each ring-focus parabolic segment is a parabolic surface extending along a circle around the support structure.
Claims16
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.
A multisegment reflector antenna, the antenna comprising:
- a support structure comprising a top conical surface;
- a feed array including a plurality of subarrays disposed on the support structure;
- and
- a multisegment reflector disposed around the support structure and configured to reflect a plurality of beams of the feed array into a plurality of elevation angles,
- 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.
Dependencies are inferred from the claim text.