Apparatus and method for communication using wireless power
First Claim
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1. An apparatus using a wireless power, comprising:
- an amplifier configured to amplify an input signal based on a power supplied to the amplifier;
a load element coupled to the amplifier; and
a controller configured tomeasure a voltage applied to the load element,detect a change in the power caused by a change in an impedance of a target device based on the measured voltage, anddemodulate a message from the target device based on the detected change,wherein the load element comprises a resistor, or an ON-resistance of a transistor, or a line impedance, or any combination thereof.
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Abstract
An apparatus and method for communication using a wireless power are provided. The apparatus includes an amplifier configured to amplify an input signal based on a power supplied to the amplifier. The apparatus further includes a control unit configured to detect a change in an impedance of a target device, and to change the power based on the change in the impedance. The apparatus further includes a demodulation unit configured to receive a message from the target device, and to demodulate the message based on the changed power.
16 Citations
16 Claims
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1. An apparatus using a wireless power, comprising:
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an amplifier configured to amplify an input signal based on a power supplied to the amplifier; a load element coupled to the amplifier; and a controller configured to measure a voltage applied to the load element, detect a change in the power caused by a change in an impedance of a target device based on the measured voltage, and demodulate a message from the target device based on the detected change, wherein the load element comprises a resistor, or an ON-resistance of a transistor, or a line impedance, or any combination thereof. - View Dependent Claims (2, 3, 4)
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5. An apparatus using a wireless power, comprising:
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a converter configured to receive an alternating current (AC) voltage, and convert the AC voltage to a direct current (DC) voltage of a plurality of levels; a controller configured to control the DC voltage of a plurality of levels, and modulate data based on the controlled DC voltage; and an amplifier configured to amplify an input signal based on the controlled DC voltage. - View Dependent Claims (6, 7, 8, 9)
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10. A communication method of a wireless power transmitter, comprising:
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measuring a voltage supplied to the amplifier using a load element coupled to the amplifier; detecting a change in the power caused by a change in an impedance of a target device based on the measured voltage; demodulating a message received from the target device based on the detected change, wherein the load element comprises a resistor, or an ON-resistance of a transistor, or a line impedance, or any combination thereof. - View Dependent Claims (11, 12)
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13. A communication method of a wireless power transmitter, comprising:
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converting an alternating current (AC) voltage to a direct current (DC) voltage of a plurality of levels; controlling the DC voltage of the plurality of levels; modulating data based on the controlled DC voltage; and amplifying an input signal based on the controlled DC voltage. - View Dependent Claims (14, 15, 16)
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Specification