Utilizing Everyday Metallic Structures as UHF RFID Antennas

This paper introduces a technique where everyday metallic objects can be made resonant at a frequency of interest and to function as an antenna. This is achieved by the coupling of parallel resonant devices referred to as “Linear Resonators” to a metallic structure, where the Linear Resonator fundamentally operates as a passive frequency selective switch. Presented here is an initial proof of concept design targeted at the European RFID band. The design performance is evaluated both by simulation and practical measurements on various tubular structures.