Tiled phased array antenna
First Claim
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1. An antenna array, comprising:
- a plurality of identical antenna element support members assembled mutually adjacent to one another so as to form an array;
a plurality of antenna elements arranged in a predetermined pattern on each of said support members; and
wherein the plurality of support members are arranged in an orientation pattern so as to form an irregular array of antenna elements and thereby provide grating amelioration.
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Abstract
A phased array antenna consisting of like multi-element tiles whose elements are located so as to produce an irregular array when the tiles have mutually different orientations, e.g., random. The resulting irregular array reduces the effective translational period of the array elements, which in turn ameliorates grating lobes even for wide (one wavelength) effective element spacings. An antenna so designed can maintain low peak sidelobes at far higher frequencies than a conventional translational-periodic phased array antenna of the same element density.
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Citations
26 Claims
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1. An antenna array, comprising:
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a plurality of identical antenna element support members assembled mutually adjacent to one another so as to form an array;
a plurality of antenna elements arranged in a predetermined pattern on each of said support members; and
wherein the plurality of support members are arranged in an orientation pattern so as to form an irregular array of antenna elements and thereby provide grating amelioration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An antenna array, comprising:
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a plurality of generally square antenna tile members placed adjacent one another so as to form an array of antenna elements;
four antenna elements arranged in a predetermined identical pattern on each of said tiles; and
wherein the plurality of antennas are arranged in an orientation pattern so as to form an irregular array of antenna elements so as to provide grating amelioration. - View Dependent Claims (23, 24, 25, 26)
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Specification