PRESENCE AND RANGE DETECTION OF WIRELESS POWER RECEIVING DEVICES AND METHOD THEREOF
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United States of America Patent
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Mar 11, 2011
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Nov 3, 2011
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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.
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