Patent ID: 11874365
Assignee: ZEBRA TECHNOLOGIES CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 8:
9. A method comprising:
energizing a passive RFID tag by transmitting a narrowband RFID signal from a narrowband RFID reader, the energizing of the passive RFID tag to cause the passive RFID tag to modulate the narrowband RF signal by switching a first antenna of a dual band antenna inlay of the passive RFID tag to create a backscatter reflection target and reflect the modulated narrowband RF signal indicative of tag data of the passive RFID tag;
transmitting a wideband RF signal from a first wideband transceiver, the backscatter reflection target to reflect the wideband RF signal;
receiving the reflected backscatter wideband RF signal at a second wideband transceiver, the second wideband transceiver is different that the first wideband transceiver;
recording time-of-arrival data indicative of a time the reflected backscatter wideband RF signal was received at the second wideband transceiver; and
determining, using processing circuitry, a location measurement of the passive tag based on the time-of-arrival data, wherein each of the first wideband transceiver and the second wideband transceiver are configured to transmit wideband RF signals and receive wideband RF signals.