Verfahren zum Betrieb eines Passiven Rfid-Etiketts

Details

Veröffentlichungs-Nr.

EP4783065

Anmeldetag

27. Januar 2025

Veröffentlichung

29. Juli 2026

Rechtsraum

EP

IPC

G06K19/07, G06K19/077

Abstract

A method for operating a passive radio-frequency-identification (RFID) tag comprising: an integrated-circuit (IC) picked from a region of a wafer, with an IC integrated capacitance value based on the region of the wafer. The IC comprises a variable-capacitance and a memory-device. The method comprises: a first-configuration-step comprising: receiving configuration-data, which defines a capacitance offset from a nominal value based on the region of the wafer, from the memory-device; and setting the variable-capacitance to an initially-configured capacitance value based on the configuration-data. A second-configuration-step comprising: measuring IC-response power from a received signal from an RFID reader for the initially-configured capacitance value; setting the variable-capacitance to a first-reconfigured capacitance value; measuring the IC-response power from the received signal for the first-reconfigured capacitance value; and setting the variable-capacitance as one from a list containing: the initially-configured capacitance value, and the first-reconfigured capacitance value, based on the IC-response power for each capacitance value.

Anmelder

Firma

NXP B.V.

Land

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