Wireless energy transfer antennas and energy charging systems
First Claim
1. A wireless electrical power transfer system on-board a vehicle, the system comprising:
- a first power utilization device comprising a first receiving antenna comprising a first pair of parallel wires configured as a first helix, the first receiving antenna configured to wirelessly receive power; and
a transmitter antenna comprising;
a second pair of parallel wires configured as a second helix for wirelessly transferring electrical power to the receiving antenna;
one or more variable capacitors configured for tuning the transmitter antenna between a folded dipole and normal dipole; and
a computer configured to tune the one or more variable capacitors to a first value for resonant coupling between the transmitter antenna and the first receiving antenna.
2 Assignments
0 Petitions
Accused Products
Abstract
A resonant wireless energy transfer system comprises first and second antennas made up of dual parallel wire helixes wherein the wires are terminated by short wires. Voltage controlled variable capacitors are connected into the antennas to permit progressive variation between folded dipole and normal dipole operating modes such that optimum energy transfer can be achieved between the antennas over a wide range of antenna separation distances. A vehicle battery charging system using the above-described antennas is provided including an installation which allows purchase of battery charging power by members of the general public. In-vehicle energy transfer for sensors, computers, cell phones and the like is also described.
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Citations
20 Claims
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1. A wireless electrical power transfer system on-board a vehicle, the system comprising:
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a first power utilization device comprising a first receiving antenna comprising a first pair of parallel wires configured as a first helix, the first receiving antenna configured to wirelessly receive power; and a transmitter antenna comprising; a second pair of parallel wires configured as a second helix for wirelessly transferring electrical power to the receiving antenna; one or more variable capacitors configured for tuning the transmitter antenna between a folded dipole and normal dipole; and a computer configured to tune the one or more variable capacitors to a first value for resonant coupling between the transmitter antenna and the first receiving antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A wireless electrical power transfer system on-board a vehicle, the system comprising:
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a transmitter antenna comprising; a first pair of parallel wires configured as a first helix for wirelessly transferring electrical power within the vehicle; a first one or more variable capacitors configured for tuning the transmitter antenna between a folded dipole and normal dipole; and a computer configured to tune the first one or more variable capacitors to a first value for resonant coupling between the transmitter antenna and a first power utilization device. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A mobile device comprising:
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a receiver antenna comprising; a pair of parallel wires configured as a helix for wirelessly receiving electrical power from a vehicle; one or more variable capacitors configured for tuning the receiver antenna between a folded dipole and normal dipole; and an encoder/decoder configured to; receive a first value from the vehicle; and tune the one or more variable capacitors to the first value for resonant coupling between a transmitter antenna of the vehicle and the mobile device. - View Dependent Claims (20)
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Specification