Design of UWB Chipless RFID Tag using Microstrip and Slot Cross-shaped Resonators

This paper proposed a Ultra-Wide Band (UWB) chipless radio frequency identification (RFID) tag. This tag consists of integrated microstrip and slot cross-shaped resonators with stub to realize compact multi-bit design. These stubs can provide transmission zeros which are controlled independently. A prototype of four-bit chipless tag is fabricated on RO6010 with 10.8 dielectric constant. The simulation and measured results are in good agreement.