Apparatus and method for communication using wireless power
First Claim
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1. A target device which receives a wireless power, comprising:
- a target resonance unit configured to receive a wireless power from a source resonator through a magnetic coupling, to output an AC voltage, and to generate a signal which is detected by a source device which transmits a wireless power to the target device;
a rectifier configured to output a DC voltage by rectifying the AC voltage outputted from the target resonance unit;
a DC/DC converter configured to adjust the DC voltage outputted from the rectifier;
at least one load configured to selectively be connected to the DC/DC converter; and
a control unit configured to control a current flowing to the at least one load to generate an impedance mismatch between the source device and the target device,wherein the control unit generates the signal through the impedance mismatch.
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Abstract
An apparatus and method are described that may enable a target device to communicate with a source device using a wireless power. The communication apparatus receives a wireless power from a source resonator through a magnetic coupling between the source resonator and a target resonator. The communication apparatus transmits a message, and modulates the message based on the received wireless power and impedance mismatch between the source device and the target device. The communication apparatus controls the impedance mismatch by changing an impedance of the target device.
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16 Claims
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1. A target device which receives a wireless power, comprising:
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a target resonance unit configured to receive a wireless power from a source resonator through a magnetic coupling, to output an AC voltage, and to generate a signal which is detected by a source device which transmits a wireless power to the target device; a rectifier configured to output a DC voltage by rectifying the AC voltage outputted from the target resonance unit; a DC/DC converter configured to adjust the DC voltage outputted from the rectifier; at least one load configured to selectively be connected to the DC/DC converter; and a control unit configured to control a current flowing to the at least one load to generate an impedance mismatch between the source device and the target device, wherein the control unit generates the signal through the impedance mismatch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An operation method of target device which receives a wireless power, the method comprising:
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receiving a wireless power from a source resonator through a magnetic coupling; outputting an AC voltage and generating a signal which is detected by a source device which transmits a wireless power to the target device; outputting a DC voltage by rectifying the outputted AC voltage; adjusting the outputted DC voltage; selectively connecting the adjusted DC voltage to at least one load; and controlling a current flowing to the at least one load to generate an impedance mismatch between the source device and the target device, wherein the impedance mismatch generates the signal. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification