Printed 3D Stacked Chipless RFID Tag with Spectral and Polarization Encoding

摘要

A fully printable 3D stacked chipless RFID tag on a 50 mu m thin polyimide film consists of multi-layer cross-polarized dipole resonators that overlap. Data encoding is performed in a multiresonating circuit comprised of multiple stopband resonators. The resonators are screen printed with a silver based conductive paste. The chipless RFID tag is designed specifically for security applications suitable for mass deployment (trillions) of low cost items.