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.
Claims20
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;
- and
- a support structure coupling the multisegment reflector to the feed array,
- 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 feed array including a plurality of subarrays disposed over a 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.
A dual-reflector multisegment antenna, the antenna comprising:
- a first reflector including a reflecting concave surface;
- an ESA-feed panel coupled to a base of the first reflector;
- and
- a second reflector facing the ESA-feed panel and at a distance from the ESA-feed panel,
- wherein:
- the second reflector comprises a parabolic reflector and is configured to direct a plurality of beams radiated by the ESA-feed panel to the reflecting concave surface of the first reflector, and
- the first reflector comprises a conical reflector and the reflecting concave surface of the first reflector is configured to reflect the directed plurality of beams to one or more satellites.
Dependencies are inferred from the claim text.