Systems and methods for wirelessly projecting power using in-phase current loops
First Claim
1. A system for wirelessly projecting power to wirelessly power microelectronic devices, the system comprising:
- an array of current loops that are disposed adjacent to one another to define a surface and to define an in-phase virtual current loop at a periphery of the surface that produces a same direction, in-phase virtual current while current in adjacent portions of adjacent current loops flows in opposite directions, to wirelessly project power orthogonal to the surface to power microelectronic devices that are spaced apart from, and orthogonal to, the surface;
wherein the array of current loops comprises an array of at least ten wedge-shaped current loops each having an outer portion and a pair of sides. the at least ten wedge-shaped current loops being disposed adjacent to one another to define a surface such that currents in the outer portions are in-phase and current in adjacent sides of adjacent current loops are out-of-phase.
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Accused Products
Abstract
An array of in-phase current loops are disposed adjacent to one another to define a surface and to define a virtual current loop at a periphery of the surface that produces a same direction virtual current while current in adjacent portions of adjacent current loops flows in opposite directions, to thereby wirelessly project power from the surface. It has been found according to the invention that the array of in-phase current loops that are disposed adjacent to one another to define a surface and to define a virtual current loop at a periphery of the surface that produces a same direction virtual current while current in adjacent portions of adjacent current loops flows in opposite directions, can provide acceptable power to RFID tags, while reducing the risk of violating regulatory constraints. A plurality of arrays of in-phase current loops also may be provided. The multiple arrays of in-phase current loops are disposed adjacent to one another to define a surface. Each array of in-phase current loops may be configured as was described above. N-ary tree traversals, push and pop commands and/or warp commands also may be used to efficiently identify tags.
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Citations
18 Claims
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1. A system for wirelessly projecting power to wirelessly power microelectronic devices, the system comprising:
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an array of current loops that are disposed adjacent to one another to define a surface and to define an in-phase virtual current loop at a periphery of the surface that produces a same direction, in-phase virtual current while current in adjacent portions of adjacent current loops flows in opposite directions, to wirelessly project power orthogonal to the surface to power microelectronic devices that are spaced apart from, and orthogonal to, the surface;
wherein the array of current loops comprises an array of at least ten wedge-shaped current loops each having an outer portion and a pair of sides. the at least ten wedge-shaped current loops being disposed adjacent to one another to define a surface such that currents in the outer portions are in-phase and current in adjacent sides of adjacent current loops are out-of-phase.
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2. A system for wirelessly projecting power to wirelessly power microelectronic devices, the system comprising:
a plurality of arrays of current loops, the arrays of current loops being disposed adjacent to one another to define a surface, each array of current loops defining an in-phase virtual current such that in-phase virtual currents of at least some adjacent arrays of current loops are not in-phase with one another, each array of current loops comprising a plurality of current loops that are disposed adjacent to one another in the surface, such that current in adjacent portions of adjacent current loops in an array flows in opposite directions, to wirelessly project power orthogonal to the surface to power microelectronic devices that are spaced apart from, and orthogonal to, the surface. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for wirelessly projecting power to wirelessly power microelectronic devices, the method comprising the step of:
applying current to a plurality of arrays of current loops, the arrays of current loops being disposed adjacent to one another to define a surface, each array of current loops defining an in-phase virtual current such that in-phase virtual currents of at least some adjacent arrays of current loops are out-of-phase with one another, each array of current loops comprising a plurality of current loops that are disposed adjacent to one another in the surface, such that current in adjacent portions of adjacent current loops in an array flows in opposite directions, to wirelessly project power orthogonal to the surface to power microelectronic devices that are spaced apart from, and orthogonal to, the surface.
Specification