Beamforming rectennas, systems and methods for wireless power transfer
First Claim
1. A system, comprising:
- a beamforming rectenna, the beamforming rectenna comprising;
a plurality of antennas;
a plurality of terminal port rectifying circuits; and
a beamforming network, the beamforming network including (a) a plurality of antenna ports connecting to the plurality of antennas, and (b) a plurality of terminal ports connecting to the plurality of terminal port rectifying circuits,wherein the beamforming network is configured to direct electromagnetic power received via the plurality of antennas and the plurality of antenna ports to a respective subset of the plurality of terminal ports, based on the electromagnetic power received, wherein there are a plurality of different subsets.
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Accused Products
Abstract
A passive beamforming rectenna includes a plurality of antennas, a plurality of terminal port rectifying circuits, and a beamforming network. The beamforming network includes (a) a plurality of antenna ports connecting to the plurality of antennas, and (b) a plurality of terminal ports connecting to the plurality of terminal port rectifying circuits. The beamforming network further includes a microwave lens or any of a variety of other structures. The beamforming rectenna is characterized by a plurality of radiation distribution patterns. Electromagnetic power is received through the plurality of antennas. The beamforming network directs the received electromagnetic power, in substantial portion, to a subset of the plurality of terminal ports associated with particular radiation distribution patterns whose amplitudes, in the direction from which the electromagnetic power was received, are large relative to the amplitudes, in the same direction, of other radiation distribution patterns associated with other terminal ports.
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Citations
25 Claims
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1. A system, comprising:
a beamforming rectenna, the beamforming rectenna comprising; a plurality of antennas; a plurality of terminal port rectifying circuits; and a beamforming network, the beamforming network including (a) a plurality of antenna ports connecting to the plurality of antennas, and (b) a plurality of terminal ports connecting to the plurality of terminal port rectifying circuits, wherein the beamforming network is configured to direct electromagnetic power received via the plurality of antennas and the plurality of antenna ports to a respective subset of the plurality of terminal ports, based on the electromagnetic power received, wherein there are a plurality of different subsets. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A system comprising:
a plurality of beamforming rectennas, each of the plurality of beamforming rectennas comprising; a plurality of antennas; a plurality of terminal port rectifying circuits; and a beamforming network, the beamforming network including (a) a plurality of antenna ports connecting to the plurality of antennas and (b) a plurality of terminal ports connecting to the plurality of terminal port rectifying circuits, wherein the beamforming network is configured to direct electromagnetic power received via the plurality of antennas and the plurality of antenna ports to a respective subset of the plurality of terminal ports, based on the electromagnetic power received, wherein there are a plurality of different subsets. - View Dependent Claims (18)
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19. A method for wireless transfer of power, the method for use with a beamforming rectenna, the beamforming rectenna comprising:
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a plurality of antennas; a plurality of terminal port rectifying circuits; and a beamforming network, the beamforming network including (a) a plurality of antenna ports connecting to the plurality of antennas, and (b) a plurality of terminal ports connecting to the plurality of terminal port rectifying circuits; and the method comprising; receiving electromagnetic power by one or more of the plurality of antennas and one or more of the plurality of antenna ports; directing, by the beamforming network, at least a substantial portion of the electromagnetic power to a respective subset of the plurality of the terminal ports, based on the electromagnetic power received, and thence toward a respective subset of the plurality of the terminal port rectifying circuits, wherein there are a plurality of different subsets; and rectifying the electromagnetic power by the subset of the plurality of terminal port rectifying circuits. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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Specification