Frequency Coded Chipless RFID Tag Design using L and U - shaped Resonators

Chipless Radio Frequency Identification (RFID) Technology that uses electromagnetic (EM) signals as interrogating signals, is one of the most promising automatic tagging and tracking technologies that has gained prominence in the field of tracking and identification of objects in the real-time over the past few years. The tag intended to design consists of ‘L’ shaped resonators combined with ‘U’ shaped resonators. The tag design is fabricated on FR4 substrate and (tan δ=0.02), which resonates at 2.4 GHz and 5.8 GHz frequencies which fall under Industrial, Scientific and, Medical (ISM) band applications. The proposed tag is designed in CST microwave suite version 2021 and the simulated results are validated in an anechoic chamber.