Patent ID: 8193912

Claim:
A method for a Radio Frequency Identification (RFID) tag configured to communicate with an RFID reader, the method comprising: receiving a command from the reader, the command indicating a commanded reply frequency (LF IDEAL ) for the tag; determining an integer number through dividing a current clock frequency of the tag by the LF IDEAL ; determining a computed reply frequency (LF COMPUTED ) based on dividing the current clock frequency of the tag by the integer number; determining if the LF COMPUTED meets a predefined limit for a deviation of the LF COMPUTED from the LF IDEAL ; if the LF COMPUTED does not meet the predefined limit, adjusting the current clock frequency of the tag prior to backscattering a reply signal, determining an adjusted reply frequency (LF ADJUSTED ) based on the adjusted clock frequency, and backscattering the reply signal employing the LF ADJUSTED .