Design and analysis of a novel low cost high data capacity chipless RFID tag on plastic substrate

This study focuses on the design and analysis of a low cost compact high data capacity chipless RFID tag on flexible mylar plastic substrate. The size of the overall tag with integrated antennas is less than a credit card. The designed tag uses polarization diversity to provide a bit capacity of up to 20 bits in the short range UWB band of 22-26.5 GHz. A technique for enhancing the minimum detection depth is applied here to increase the readability of the tag. Along with frequency variation, this paper also proposes the scheme for bit detection using phase difference determination in order to increase robustness. A printed prototype of the proposed design and its measured result is also illustrated in the paper.