Multisegment reflector antenna directing beams
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 dual-reflector multisegment antenna, comprising:
- a first reflector comprising a concave surface;
- an electronically scanned array (ESA) feed array coupled to a base of the first reflector;
- and
- a second reflector facing the ESA feed array, wherein:
- the concave surface is configured to reflect a plurality of beams to the second reflector, and
- the second reflector is configured to direct the plurality of beams radiated to the ESA-feed array.
A dual-reflector multisegment antenna, comprising:
- a conical reflector comprising a base, the conical reflector further comprising a first concave surface;
- a feed array coupled to the conical reflector at the base;
- and
- a parabolic reflector comprising a second concave surface that faces the feed array,
- wherein in response to a beam incident on the conical reflector:
- the conical reflector is configured to direct, based on the first concave surface, the beam to the second concave surface, and
- the second concave surface is configured to direct the beam to the feed array.
A method for directing one or more beams, the method comprising:
- providing a conical reflector comprising a first concave surface;
- providing a parabolic reflector comprising a second concave surface, wherein the parabolic reflector is configured to receive the one or more beams from the conical reflector based on the first concave surface;
- and
- providing a feed array coupled to the conical reflector, wherein the feed array is configured to receive the one or more beams from the parabolic reflector based on the second concave surface.
Dependencies are inferred from the claim text.