Radio-frequency identification transponder has resonant circuit for supplying clock pulse with pre-determined clock frequency, and self calibration stage for calibration of actual clock frequency

摘要

#CMT# #/CMT# The Radio-frequency identificationtransponder has a resonant circuit for supplying a clock pulse with a pre-determined clock frequency, and a self calibration stage for the calibration of the actual clock frequency of the resonant circuit on the pre-determined clock frequency. The self calibration stage is established such that it compares a clock frequency of the resonant circuit. The clock frequency is determined during a monitoring period. Another clock frequency is determined during a frequency maintenance period. #CMT# : #/CMT# An independent claim is included for a method for the self calibration of a radio-frequency identification transponder. #CMT#USE : #/CMT# Radio-frequency identification transponder. #CMT#ADVANTAGE : #/CMT# The radio-frequency identification transponder has a resonant circuit for supplying a clock pulse with a pre-determined clock frequency, and a self calibration stage for the calibration of the current clock frequency of the resonant circuit on the pre-determined clock frequency, and hence ensures improved characteristic of the radio-frequency identification transponder. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a block diagram of a radio-frequency identification transponder. CLK : Clock signals CNTL : Controlling stage D : Diode RF1 : Node VCL : Supply voltage.