METHOD AND SYSTEM FOR POWERING AN ELECTRONIC DEVICE VIA A WIRELESS LINK
A method and system for providing power to a chargeable device via radio frequency link are provided. In one aspect, a method of providing power to a chargeable device via radio frequency link comprises generating a substantially unmodulated signal. The method further comprises radiating a substantially unmodulated radio frequency (RF) signal to the chargeable device via a transmit antenna based on the substantially unmodulated signal. The method further comprises powering or charging the chargeable device with power delivered by the substantially unmodulated RF signal.
1 . A chargeable device, comprising:
a receiver configured to receive a first signal from a first transmitter and a second signal from a second transmitter; and
the receiver further configured to combine the first and second signals to collectively form operating power for the chargeable device.
2 . The chargeable device of claim 2 , wherein the receiver is further configured to determine a phase difference between the first and second signals.
3 . The chargeable device of claim 2 , wherein the phase difference is determined based on one of an amplitude and power determination of the combined first and second signals.
4 . The chargeable device of claim 2 , further comprising a transmitter configured to send a feedback signal indicative of the phase difference to at least one of the first and second transmitters.
5 . The chargeable device of claim 1 , wherein each of the first and second signals comprises a substantially unmodulated signal.
6 . A method for charging a chargeable device, comprising:
receiving a first signal from a first transmitter and receiving a second signal from a second transmitter; and
combining the first and second signals to collectively form operating power for the chargeable device.
7 . The method of claim 6 , further comprising determining a phase difference between the first and second signals.
8 . The method of claim 6 , wherein the phase difference is determined based on one of an amplitude and power determination of the combined first and second signals.
9 . The method of claim 6 , further comprising sending a feedback signal indicative of the phase difference to at least one of the first and second transmitters.
10 . The method of claim 6 , wherein each of the first and second signals comprises a substantially unmodulated signal.
11 . A chargeable device, comprising:
means for receiving a first signal from a first transmitter and receiving a second signal from a second transmitter; and
means for combining the first and second signals to collectively form operating power for the chargeable device.
12 . The chargeable device of claim 11 , further comprising means for determining a phase difference between the first and second signals.
13 . The chargeable device of claim 11 , further comprising determining a phase difference based on one of an amplitude and power determination of the combined first and second signals.
14 . The chargeable device of claim 11 , further comprising means for sending a feedback signal indicative of the phase difference to at least one of the first and second transmitters.
15 . A method of receiving power via a wireless link, the method comprising:
receiving a substantially unmodulated magnetic signal with a polarization aligned with a power consuming device; and
based on said receiving, producing a signal to power or charge the power consuming device via a transmit antenna based on the substantially unmodulated signal.
16 . The method of claim 15 , wherein the substantially unmodulated signal comprises a sinusoidal wave.
17 . The method of claim 15 , wherein the substantially unmodulated signal consists of a substantially single frequency signal.
18 . A system configured to provide power to a power consuming device, the system comprising:
a transmitter configured to generate a substantially single frequency magnetic signal adapted for providing power to the power consuming device; and
a transmit antenna configured to receive the signal from the transmitter and radiate a magnetic signal with a polarization aligned with the power consuming device.
19 . The system of claim 18 , wherein the transmit antenna comprises a unidirectional antenna configured to radiate the magnetic signal to the power consuming device via a directional path.
20 . The system of claim 18 , wherein the beamwidth of the directional antenna is between 0.05 and 20 degrees.
21 . The system of claim 18 , wherein the single frequency signal comprises a substantially pure sinusoidal wave.
22 . A method of providing power via a wireless link, the method comprising:
generating a substantially unmodulated signal; and
based on the generating, radiating a substantially unmodulated magnetic signal to power or charge a power consuming device via a transmit antenna based on the substantially unmodulated signal with a polarization aligned with the power consuming device.
23 . The method of claim 22 , wherein the transmit antenna comprises a directional antenna configured to radiate the substantially unmodulated signal to the power consuming device via a directional path.
24 . The method of claim 22 , further comprising powering or charging the power consuming device with power delivered by the substantially unmodulated signal.
25 . A system for providing power via a wireless link, comprising:
means for generating a substantially unmodulated signal; and
based on the generating, means for radiating a substantially unmodulated magnetic signal to power or charge a power consuming device via a transmit antenna based on the substantially unmodulated signal with a polarization aligned with the power consuming device.