Simulation of a Chipless RFID System using discreet FrFT to recover individual tags IDs

This paper presents a model of a real environment case of a Chipless RFID System using a discreet FrFT algorithm to retrieve the ID of tags that share the same interrogation zone. The simulation is implemented in MATLAB R20018b and is based on physical measurements of the frequency behaviour of printed Multi-Resonant Circuits to achieve a better understanding of the challenges faced when designing said systems. The results show that the Multi-Resonant Circuit Frequency behaviour can be approximated by a band-stop FIR filter and that the tags IDs can be exceptionally well decoded by performing windowing in a fractional domain. The results show that the Multi-Resonant Circuit Frequency behaviour can be approximated by a bandstop FIR filter and that the tags IDs can be exceptionally well decoded by performing windowing in a fractional domain.