Realization Of Chipless RFID Tag For Effective Band Utilization

Abstract

This project presents the realization of a chipless Radio Frequency Identification (RFID) tag using L-shaped resonators for effective band utilization. Chipless RFID tags do not have an integrated circuit (IC) and instead use passive resonant structures to encode information. The tag is made up of a series of resonators that are designed to resonate at specific frequencies. Each resonator is designed to have a unique resonant frequency that corresponds to a specific bit of information. They have applications in inventory tracking, object identification, anti-counterfeiting, and other similar fields. When the tag is exposed to an electromagnetic field, the resonators absorb energy from the field and begin to resonate at their respective frequencies. The reader then detects the spectral response of the tag, which provides information about the resonant frequencies and, therefore, the encoded information. In this project chipless RFID tag is designed on a low-cost FR-4 substrate with copper resonators, measuring 14mm by 14mm. The resonators are designed to resonate at specific. frequencies and encode information in the spectral domain. The tag operates in the microwave. frequency range, from 4 to 12 GHz.