Device for detecting object marked with radio frequency identification label identified by electromagnetic waves, has reading devices with frequency bands for supplying energy to transponder of label and for data exchange with transponder

摘要

The device has reading device (1) with a frequency band (F1) for supplying energy to a transponder (3) of a label and for data exchange with the transponder. Another reading device (2) with another frequency band (F2) is provided for measuring the distance to a distance measurement modulator (4) in the region of the label. The energy for the distance measurement is supplied to the distance measurement modulator by the former reading device. The distance measurement modulator is a backscatter modulator, and is integrated in the transponder with Radio frequency identification chip. An independent claim is included for a method for detecting object marked with radio frequency identification label identified by electromagnetic waves.