MINIATURIZEDL-SHAPED AND U-SHAPED RESONATOR BASED 8-BIT AND 12-BIT CHIPLESS RFID TAG

Abstract

Chipless Radio Frequency Identification (RFID) technology is a wireless technology that uses radio frequency signals (RF) to identify objects automatically. Chipless RFID tags promise a low-cost and printable solution for item tracking, authentication, andsensing in various applications, including supply chain management and the Internet of Things (IoT). In this work, two compact-sized prototypes of 8-bit chipless radio frequency identification (RFID) tags are modeled as L-shaped and U-shaped resonators. The proposed tags are printed on (14.5mm ×14.5mm) Rogers RT5880 substrate with a dielectric constant, 𝜀𝑟=2.2,and a thickness, ℎ=1.575𝑚𝑚. The simulated RCS responses for both the L-shaped and the U-shaped 8-bit chipless RFID tags are presented. A prototype of 12 back-to-back L-shaped resonators with different lengths corresponding to resonant frequencies between 5 and 8.5 GHz is proposed to increase the chipless RFID tag capacity. The proposed 12 back-to-back L-shaped resonators chipless RFID tag is printed on (15mm ×25mm) Rogers RT5880 substrate. The simulated RCS response for the compact 12-bit L-shaped resonator-based chipless RFID tag is calculated.