Study on the maximum read range of 2.45 GHz band passive RFID tags close to metallic plates

Abstract

In this paper, we study on the maximum read range of 2.45GHz passive RFID tag when metallic plate existed behind it. From a theoretical analysis, computer simulation and experiment result, they reveal that if the RFID tag and metallic plate are separated by several mm, it is able to achieve the same read range as free-space environment. Additionally, we also include comparative study of dipole antenna model and μ-chip antenna model. Simulation result shows that the use of dipole antenna model can bring the same performance with shorter analytical time compare to μ-chip antenna model. Finally, experimental study was conducted to confirm the validity of previous analysis. © 2009 The Institute of Electrical Engineers of Japan.