Method and system for minimizing overlap nulling in switched beams
First Claim
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1. A system, comprising:
- an antenna;
a first circuit operable to provide a first signal to said antenna; and
a second circuit operable to provide a second signal to said antenna, the second signal being offset in time from the first signal, wherein said antenna is operable to transmit a first beam corresponding to the first signal, said antenna is further operable to transmit a second beam corresponding to the second signal and partially overlapping the first beam, the second beam being offset in time to the first beam to thereby minimize a formation of nulls within the first beam and the second beam.
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Abstract
A wireless system, which minimizes nulls within the wireless system, while simultaneously providing diversity. A wireless system will now have increased capacity and coverage due to an enhanced signal to interference ratio in the areas of beam overlap. The system uses time or frequency offset on the signals input to an antenna to minimize interference in the regions of beam overlap. Additionally, polarization diversity can be introduced using Butler Matrices in conjunction with array elements to enhance the interference reduction.
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Citations
12 Claims
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1. A system, comprising:
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an antenna;
a first circuit operable to provide a first signal to said antenna; and
a second circuit operable to provide a second signal to said antenna, the second signal being offset in time from the first signal, wherein said antenna is operable to transmit a first beam corresponding to the first signal, said antenna is further operable to transmit a second beam corresponding to the second signal and partially overlapping the first beam, the second beam being offset in time to the first beam to thereby minimize a formation of nulls within the first beam and the second beam. - View Dependent Claims (2, 3, 4, 5)
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6. A system, comprising:
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an antenna;
a first circuit operable to provide a first signal to said antenna; and
a second circuit operable to provide a second signal to said antenna, the second signal being offset in frequency from the first signal, wherein said antenna is operable to transmit a first beam corresponding to the first signal, said antenna is further operable to transmit a second beam corresponding to the second signal and partially overlapping the first beam, the second beam being offset in frequency to the first beam to thereby minimize a formation of nulls within the first beam and the second beam. - View Dependent Claims (7, 8, 9, 10)
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11. A system, comprising:
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an antenna;
a plurality of circuits operable to provide a plurality of signals to said antenna, wherein a first signal in each pair of adjacent signals is offset in time from a second signal in each pair of adjacent signals;
wherein said antenna is operable to transmit spatially distinct beams corresponding to the plurality of signals, and wherein a first beam in each pair of adjacent beams partially overlaps and is offset in time from a second beam in each pair of adjacent beams to thereby minimize a formation of nulls in the spatially distinct beams.
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12. A system, comprising:
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an antenna;
a plurality of circuits operable to provide a plurality of signals to said antenna, wherein a first signal in each pair of adjacent signals is offset in frequency from a second signal in each pair of adjacent signals;
wherein said antenna is operable to transmit spatially distinct beams corresponding to the plurality of signals, and wherein a first beam in each pair of adjacent beams partially overlaps and is offset in frequency from a second beam in each pair of adjacent beams to thereby minimize a formation of nulls in the spatially distinct beams.
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Specification