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US 6,661,376 B2Granted
Tiled antenna with overlapping subarrays
AssigneeNorthrop Grumman Corporation
InventorsChristine Maceo, John Wojtowicz, Daniel Boeringer
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Abstract
An antenna having a tiled architecture with overlapping subarray in two dimensions is disclosed. Each tile has two orthogonal ports and there is no physical interconnection between adjacent tiles. The outputs are coupled to individual receivers. The outputs of ports from n adjacent tiles are digitally combined to form an overlapping subarray.
Claims17
An antenna array, comprising:
- a plurality of tiles having no physical interconnects among adjacent tiles, wherein each tile has two orthogonal ports;
- a plurality of receivers, wherein each receiver is individually coupled to orthogonal ports on said plurality of tiles;
- and
- a digital beamforming unit that receives outputs from said plurality of receivers and generates an overlapping subarray beam.
1 more element
A method for creating an antenna aperture with overlapped subarrays in two dimensions in an antenna comprised of a plurality of tiles:
- applying n phase offsets to a first port of a tile of the antenna thereby generating n beams, wherein n is an integer;
- adding said n beams to a second port of said tile thereby forming n partial overlapped subarrays;
- and
- combining n partial overlapped subarrays from n adjacent tiles to form one overlapped subarray.
1 more element
Dependencies are inferred from the claim text.