CPC G06K 19/0723 (2013.01) [G06K 19/0707 (2013.01); H04B 5/0031 (2013.01); H04B 5/0062 (2013.01); H04Q 2209/47 (2013.01); H04Q 2209/886 (2013.01)] | 14 Claims |
1. An energy harvesting radio Frequency Identification (RFID) chip with two level power output, comprising:
a processor;
a non-transitory memory;
a first radio transceiver;
an impedance circuit configured to convert radio frequency (RF) energy from ambient RF signals received by a first energy harvesting antenna to a first electrical energy level and to convert RF energy from proximate RF signals to a second electrical energy level;
an energy storage device configured to store electrical energy; and
an application stored in the non-transitory memory that, when executed by the processor in response to the first electrical energy level, transfers a beacon to the first radio transceiver to broadcast in a first RF range; and in response to the second electrical energy level, transfers a message to the first radio transceiver or a second radio transceiver to broadcast in a second RF range.
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