PORTABLE RADIO DEVICE ADAPTED TO FUNCTION AS A WIRELESS CHARGER
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United States of America Patent
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Issued Date -
Apr 28, 2016
app pub date -
Oct 24, 2014
filing date -
Oct 24, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A portable radio device is adapted to function as a wireless charger. The device includes a power supply source, a power control circuit, a controller, a power amplifier connected to the power control circuit to draw a first supply voltage from the power control circuit, and a source coil. In operation, the controller receives a request for charging at least one other device coupled to a receiver coil. When the receiver coil is positioned within a predetermined range of distances from the source coil, the controller switches a connection of the power control circuit to the source coil and controls the power control circuit to increase the voltage to a second supply voltage provided to energize the source coil and to inductively couple the source coil to the receiver coil at a predetermined magnetic resonance frequency for wirelessly charging the at least one other device.
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