Development of a New 24-bit High-Performance Chipless RFID Tag for Accurate Identification in IoT Systems

Chipless RFID has the potential to bring in a paradigm change in industrial applications, notably
in the world of the Internet of Things (IoT). This wireless technology permits distant identification, sensing,
and tracking, giving tremendous development prospects. Despite substantial advances over the previous
century, designing high-performance chipless RFID for IoT applications remains a problem. This research
presents a new chipless planar RFID tag for item tracking and identification in IoT systems. The suggested
tag uses numerous T-shaped slow-wave structures as micro-reflecting resonators with different dimensions
on a lossy substrate to encode information in the tag’s backscattered signal after illumination. The mutual
coupling between the resonators has been minimized to improve tag performance and printing variety. A tag
with a coding capacity of 24 bits and a compact size of 60 × 40 mm2 was simulated in CST Microwave
Studio to validate the suggested approach. To create tags, several patterned configurations were applied on a
Rogers RO4350B substrate, and their radar cross-section responses were studied. When compared to typical
multi-resonator tags, the suggested tag design demonstrated excellent downsizing and efficient frequency
spectrum usage. Furthermore, the Q-factor and coding strength were both high, showing that the suggested
technology is capable of manufacturing high-performance chipless tags.