Fully printable multi-bit chipless RFID transponder on flexible laminate

A fully printable chipless RFID system on a 90-¿m thin Taconic TF-290 laminate is presented. The transponder consists of two cross-polarized ultra-wide band antennas and a multiresonating circuit. The data encoding is performed in the multiresonating circuit which is comprised of multiple stopband spiral resonators. The chipless transponder encodes data into the spectral signature in both magnitude and phase of the spectrum. The tag design can be transferred easily to plastic and paper, making it suitable for mass deployment for low cost items and has the potential to replace trillions of barcodes printed each year.