Estimation of Backscattered Signals of Frequency-coded Chipless RFID Tag

Abstract

In this paper, we present an approximated method in order to estimate a frequency-coded chipless RFID tag response. This study can broaden the theoretical understanding of the backscattered signal from a chipless tag in the frequency spectral and time domain, therefore, a detection process can be improved. Both simulation and measurement results are compared in order to validate the concept. Moreover, it has been concluded that the response of a frequency-coded tag is similar to the response of a multi-band filter.