Detecting resonant frequencies
First Claim
Patent Images
1. A device for wirelessly transferring energy, comprising:
- a transmitter coil to generate a magnetic field to wirelessly charge a battery;
a noise signal generator to generate a noise signal and send the noise signal to the transmitter coil; and
a frequency detection circuit to detect a resonance due to the noise signal and calculate a frequency of the resonance.
1 Assignment
0 Petitions
Accused Products
Abstract
Techniques for wirelessly transferring energy are described. An example device includes a transmitter coil to generate a magnetic field to wirelessly charge a battery. The device also includes a noise signal generator to generate a noise signal and send the noise signal to the transmitter coil. A frequency detection circuit is used to detect a resonance due to the noise signal and calculate a frequency of the resonance.
16 Citations
25 Claims
-
1. A device for wirelessly transferring energy, comprising:
-
a transmitter coil to generate a magnetic field to wirelessly charge a battery; a noise signal generator to generate a noise signal and send the noise signal to the transmitter coil; and a frequency detection circuit to detect a resonance due to the noise signal and calculate a frequency of the resonance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method of operating a wireless power transmitter, comprising:
-
generating a noise signal and sending the noise signal to a transmitter coil; detecting a resonance caused by the noise signal and calculating a frequency of the resonance; and sending a charging signal to the transmitter to power an electrical device based on the frequency of the resonance. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. A system for tuning in a wireless power transmitter, comprising:
-
a transmitter coil configured to generate a magnetic field to wirelessly charge a battery; a matching circuit to impedance match the transmitter coil to a power amplifier; a noise signal generator to generate a noise signal and send the noise signal to the transmitter coil; a frequency detection circuit to detect a resonant frequency of the transmitter coil based on an electrical response to the noise signal; and a controller to adjust the matching circuit based on the resonant frequency. - View Dependent Claims (22, 23, 24, 25)
-
Specification