Recharging apparatus
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United States of America Patent
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Jul 24, 2012
Grant Date -
May 4, 2006
app pub date -
Oct 28, 2004
filing date -
Oct 28, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An energy harvesting circuit has an active automatic tuning circuit to search for broadcast frequencies in a band of interest and selecting only those broadcast signals received with sufficient RF strength to be used in energy harvesting. This circuit would provide power storage devices with a circuit that has a means to select the ambient RF that can maximize or enhance the performance of an RFID circuit by increasing the amount of energy for harvesting. This automatic tuning would enable a power storage devices charger circuit to move from location to location without manual tuning of the circuit and increase the effective range of an RFID circuit.
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