An IoT empowered flexible chipless RFID tag for low cost item identification

This paper demonstrates the study and design of a compact and inexpensive chipless RFID tag with increased data capacity on flexible substrates like plastic or paper. Along with the integrated antennas, the overall size of this tag is similar to that of a credit card. In this case, polarization diversity is used to provide a bit capacity of up to 10 bits in the UWB short range RADAR band of 22-26.5 GHz. An interrogation process of the printed tag prototype to extract the encoded information is demonstrated here and the measured results ensure the validity of the proposed design.