NEAR FIELD TRANSMITTERS FOR WIRELESS POWER CHARGING
First Claim
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1. A method for charging an electronic device, the method comprising:
- leaking an RF energy signal from a charging surface in response to a metal structure being proximately positioned at a surface of the charging surface to cause the RF energy signal to enter a cavity formed between a structure of the charging surface and the metal structure so that an antenna of the electronic device can receive the leaked RF energy signal and route the received RF energy signal to a rectifier to convert the RF energy signal to charge a chargeable battery.
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Abstract
Disclosed is a system including RF circuitry configured to generate an RF signal; a plurality of unit cells configured to receive the RF signal and to cause an RF energy signal having a center frequency to be present within the unit cells; and receiver circuitry configured to charge an electronic device in response to an antenna of the electronic device receiving the RF energy signal when the antenna is tuned to the center frequency and positioned in a near-field distance from one or more of the unit cells.
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Citations
19 Claims
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1. A method for charging an electronic device, the method comprising:
leaking an RF energy signal from a charging surface in response to a metal structure being proximately positioned at a surface of the charging surface to cause the RF energy signal to enter a cavity formed between a structure of the charging surface and the metal structure so that an antenna of the electronic device can receive the leaked RF energy signal and route the received RF energy signal to a rectifier to convert the RF energy signal to charge a chargeable battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for charging an electronic device, the method comprising:
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applying an RF signal to a plurality of unit cells of a charging surface to cause an RF energy signal to be present within the unit cells of the charging surface; and leaking the RF energy signal from one or more of the unit cells to a cavity formed between a structure of the charging surface and a metal portion of the electronic device positioned in a near-field distance from the one or more of the unit cells to cause an antenna of the electronic device to receive the RF energy signal for charging the electronic device. - View Dependent Claims (11, 12, 13, 14)
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15. A charging surface device comprising:
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circuitry configured to generate an RF signal; and a plurality of unit cells configured to receive the RF signal and to cause an RF energy signal to be present in the unit cells for charging an electronic device positioned in a near-field distance from one or more of the unit cells by leaking the RF energy signal from the one or more of the unit cells to a cavity formed between a structure of the charging surface and a metal portion of the electronic device to cause an antenna of the electronic device to receive the RF energy signal for charging the electronic device. - View Dependent Claims (16, 17, 18, 19)
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Specification