US 11,704,528 B2
RFID device with two-stage power harvesting
Ronald R. Marquardt, Woodinville, WA (US); and Lyle W. Paczkowski, Mission Hills, KS (US)
Assigned to T-Mobile Innovations LLC, Overland Park, KS (US)
Filed by T-Mobile Innovations LLC, Overland Park, KS (US)
Filed on Jan. 4, 2022, as Appl. No. 17/568,019.
Application 17/568,019 is a division of application No. 17/024,484, filed on Sep. 17, 2020, granted, now 11,238,324.
Prior Publication US 2022/0121894 A1, Apr. 21, 2022
Int. Cl. G08B 21/00 (2006.01); G06K 19/07 (2006.01); H04B 5/00 (2006.01)
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
OG exemplary drawing
 
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.