Adaptive shared aperture and cluster beamforming
First Claim
1. An antenna system comprising:
- an aperture including a first sub-array and a second sub-array, wherein the first sub-array comprises two or more branches, each branch of the first sub-array comprising a plurality of adjacent antenna elements, the second sub-array comprises two or more branches, each branch of the second sub-array comprising a plurality of adjacent antenna elements, and the branches of the first sub-array are interleaved with the branches of the second sub-array in the aperture;
a first divider configured to receive a first signal from the first sub-array and to provide a first plurality of divided signals to a corresponding first plurality of variable attenuators;
a second divider configured to receive a second signal from the second sub-array and to provide a second plurality of divided signals to a corresponding second plurality of variable attenuators;
a first combiner configured to receive a first attenuated signal from a first one of the first plurality of variable attenuators and a second attenuated signal from a first one of the second plurality of variable attenuators, and to combine the first attenuated signal and the second attenuated signal into a first combined signal; and
a second combiner configured to receive a third attenuated signal from a second one of the first plurality of variable attenuators and a fourth attenuated signal from a second one of the second plurality of variable attenuators, and configured to combine the third attenuated signal and the fourth attenuated signal into a combined signal.
1 Assignment
0 Petitions
Accused Products
Abstract
An adaptive shared aperture and cluster beamforming antenna system includes an aperture with first and second sub-arrays, each having a plurality of antenna elements. The antenna system further includes first and second dividers configured to receive first and second signals from the first and second sub-arrays, respectively, and to provide a first and second plurality of divided signals to a corresponding first and second plurality of variable attenuators. The antenna system further includes a first combiner configured to receive a first attenuated signal from a first one of the first plurality of variable attenuators and a second attenuated signal from a first one of the second plurality of variable attenuators, and a second combiner configured to receive a third attenuated signal from a second one of the first plurality of variable attenuators and a fourth attenuated signal from a second one of the second plurality of variable attenuators.
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Citations
29 Claims
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1. An antenna system comprising:
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an aperture including a first sub-array and a second sub-array, wherein the first sub-array comprises two or more branches, each branch of the first sub-array comprising a plurality of adjacent antenna elements, the second sub-array comprises two or more branches, each branch of the second sub-array comprising a plurality of adjacent antenna elements, and the branches of the first sub-array are interleaved with the branches of the second sub-array in the aperture; a first divider configured to receive a first signal from the first sub-array and to provide a first plurality of divided signals to a corresponding first plurality of variable attenuators; a second divider configured to receive a second signal from the second sub-array and to provide a second plurality of divided signals to a corresponding second plurality of variable attenuators; a first combiner configured to receive a first attenuated signal from a first one of the first plurality of variable attenuators and a second attenuated signal from a first one of the second plurality of variable attenuators, and to combine the first attenuated signal and the second attenuated signal into a first combined signal; and a second combiner configured to receive a third attenuated signal from a second one of the first plurality of variable attenuators and a fourth attenuated signal from a second one of the second plurality of variable attenuators, and configured to combine the third attenuated signal and the fourth attenuated signal into a combined signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 24, 25, 26)
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12. An antenna system comprising:
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a plurality of apertures, each of the plurality of apertures including two sub-arrays, wherein the first sub-array comprises two or more branches, each branch of the first sub-array comprising a plurality of adjacent antenna elements, the second sub-array comprises two or more branches, each branch of the second sub-array comprising a plurality of adjacent antenna elements, and the branches of the first sub-array are interleaved with the branches of the second sub-array in the aperture; and a plurality of shared aperture beamforming network circuits, each shared aperture beamforming network circuit corresponding to one of the sub-arrays, each shared aperture beamforming network circuit including; a divider configured to receive a signal from the corresponding sub-array and to provide a plurality of divided signals to a corresponding plurality of variable attenuators, and a combiner configured to receive a first attenuated signal from one of the plurality of variable attenuators and a second attenuated signal from a variable attenuator of another one of the plurality of shared aperture beamforming network circuits, and to combine the first attenuated signal and the second attenuated signal into a combined signal. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 27, 28, 29)
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22. An antenna system, comprising:
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a plurality of apertures, each of the plurality of apertures including two sub-arrays, each sub-array including a plurality of antenna elements; and a plurality of shared aperture beamforming network circuits, each shared aperture beamforming network circuit corresponding to one of the sub-arrays, each shared aperture beamforming network circuit including; a first divider configured to receive a signal from the corresponding sub-array and to provide a plurality of divided signals to a corresponding plurality of variable attenuators, a first combiner configured to receive a first attenuated signal from one of the plurality of variable attenuators and a second attenuated signal from a variable attenuator of another one of the plurality of shared aperture beamforming network circuits, and to combine the first attenuated signal and the second attenuated signal into a combined signal, a second divider configured to receive the combined signal from the corresponding combiner and to provide a second plurality of divided signals to a corresponding plurality of variable phase shifters, and a second combiner configured to receive a first phase shifted signal from one of the corresponding plurality of variable phase shifters and a second phase shifted signal from a variable phase shifter of another one of the plurality of shared aperture beamforming networks, and to combine the first and second phase shifted signals into a second combined signal.
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Specification