METHODS AND APPARATUSES FOR WIRELESS POWER TRANSFER
First Claim
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1. A method for providing wireless power from a power providing device to a portable electronic device, the method comprising:
- transmitting a beacon signal from the power providing device;
sensing the beacon signal at an antenna of the portable electronic device;
sending a sync signal from the antenna of the portable electronic device, the sync signal generated using energy from the beacon signal;
sensing the sync signal at the power providing device;
determining transmission parameters for forming a beam having a propagation path directed toward the portable electronic device as function of measured parameters of the sync signal as received by the power providing device; and
transmitting a wireless power signal from the power providing device as a beam using the transmission parameters, the wireless power signal for providing operating power to the portable electronic device.
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Abstract
This document discusses, among other things, a method for providing wireless power from a power providing device to a portable electronic device. The method includes generating a wireless power signal as a beam having a propagation path directed toward the portable electronic device. The beam can be generated based on parameters for an incoming signal received from the portable electronic device. The wireless power signal can be received by a portable electronic device and converted into operating power for the portable electronic device.
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Citations
21 Claims
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1. A method for providing wireless power from a power providing device to a portable electronic device, the method comprising:
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transmitting a beacon signal from the power providing device; sensing the beacon signal at an antenna of the portable electronic device; sending a sync signal from the antenna of the portable electronic device, the sync signal generated using energy from the beacon signal; sensing the sync signal at the power providing device; determining transmission parameters for forming a beam having a propagation path directed toward the portable electronic device as function of measured parameters of the sync signal as received by the power providing device; and transmitting a wireless power signal from the power providing device as a beam using the transmission parameters, the wireless power signal for providing operating power to the portable electronic device. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for providing wireless power from a first device, the method comprising:
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alternating between transmitting a power providing signal to a portable electronic device and not transmitting a power providing signal according to a duty cycle; and adjusting the duty cycle as a function of a power level of a sync signal received from a portable electronic device, wherein when the sync signal is no longer sensed, the duty cycle is reduced. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method for providing wireless power from a first device, the method comprising:
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determining whether a signal is to be used as a power source for a portable electronic device; sending the signal to the portable electronic device at a first power level when the signal is not to be used as a power source; and sending the signal to the portable electronic device at a second power level when the signal is to be used as a power source, wherein the second power level is higher than the first power level. - View Dependent Claims (14, 15, 16)
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17. A portable electronic device for receiving a wireless power signal, the portable electronic device comprising:
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an antenna for receiving the wireless power signal transmitted from a charging device; a power converter coupled to the antenna for converting power from the wireless power signal to operating power for electronic circuits associated with the portable electronic device; and a resonator coupled to the antenna for passively providing power for transmitting a return signal from the antenna, the return signal facilitating the charging device to form the wireless power signal into a beam with a propagation path directed toward the portable electronic device. - View Dependent Claims (18)
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19. A device for providing wireless power to a portable electronic device, the device comprising a processor configured to:
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determine whether a signal is to be used as a power source for the portable electronic device; send the signal to the portable electronic device at a first power level when the signal is not to be used as a power source; and send the signal to the portable electronic device at a second power level when the signal is to be used as a power source, wherein the second power level is higher than the first power level. - View Dependent Claims (20, 21)
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Specification