PRESENCE AND RANGE DETECTION OF WIRELESS POWER RECEIVING DEVICES AND METHOD THEREOF
First Claim
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1. A wireless power transmitting apparatus, comprising:
- a transmit antenna configured to generate an electromagnetic field;
a power detection module configured to detect a forward power level and a reflected power level, each of which being associated with the transmitted electromagnetic field;
a controller, coupled to the transmit antenna and power detection module, and configured to determine presence of a receiving device based on the detected reflected power level.
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Abstract
In accordance with various aspects of the disclosure, a wireless power transmitting apparatus, system, and method are presented that include features of detecting a forward power level and a reflected power level of an electromagnetic field in which a wireless transmit device is capable of determining the presence of a wireless receive device based on the detected reflected power levels.
263 Citations
20 Claims
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1. A wireless power transmitting apparatus, comprising:
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a transmit antenna configured to generate an electromagnetic field; a power detection module configured to detect a forward power level and a reflected power level, each of which being associated with the transmitted electromagnetic field; a controller, coupled to the transmit antenna and power detection module, and configured to determine presence of a receiving device based on the detected reflected power level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 18)
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10. A wireless power transmission system, comprising:
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a transmit device including a transmit antenna configured to generate an electromagnetic field, a power detection module configured to detect a forward power level and a reflected power level, each of which being associated with the field, and a controller, coupled to the transmit antenna and power detection module; and a receive device including a receive antenna configured to receive the electromagnetic field generated by the transmit antenna, wherein the controller determines presence of the receiving device based on the detected reflected power level. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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19. A wireless power transfer method, comprising:
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generating, by a transmit device, an electromagnetic field; detecting a forward power level and a reflected power level, each of which being associated with the transmitted electromagnetic field; determining, by the transmit device, presence of a receive device based on the detected reflected power level. - View Dependent Claims (20)
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Specification