A New Low-Cost HF RFID Loop Antenna Concept for Metallic Environments

This paper presents our research on the influence of metal plates on a radio frequency identification (RFID) loop antenna operating at 13.56 MHz. More specific we have tested different types of metal plates near a loop antenna in terms of resonance frequency. The performance of an RFID system strongly depends on the configuration of the antenna. The study shows that the resonance frequency will shift up in a metallic environment. Simulations were done, resulting in a better overview on the behavior of the magnetic field nearby metallic environments. Out of these results, a new antenna concept has been created. This new RFID loop antenna has remarkable good results in a metallic or changing environment. As an example, the new RFID loop antenna is designed in order to prove the increased stability.

[1]  Eddy Current Analysis of a Thin Metal Plate by Line Integral Equations , 2006, 2006 12th Biennial IEEE Conference on Electromagnetic Field Computation.

[2]  D. Lesselier,et al.  Eddy-current evaluation of three-dimensional defects in a metal plate , 2002 .

[3]  G. G. Karady,et al.  A circuital approach to estimate the magnetic field reduction of nonferrous metal shields , 1997 .

[4]  Klaus Finkenzeller,et al.  RFID Handbook: Radio-Frequency Identification Fundamentals and Applications , 2000 .

[5]  Kyeong-Sik Min,et al.  A study of capacity change antenna for RFID tag depending on ground plane , 2005, 2005 Asia-Pacific Microwave Conference Proceedings.

[6]  Bing Jiang,et al.  Energy Scavenging for Inductively Coupled Passive RFID Systems , 2005, IEEE Transactions on Instrumentation and Measurement.

[7]  S. Bovelli,et al.  A Novel Antenna Design for Passive RFID Transponders on Metal Surfaces , 2006, 2006 European Microwave Conference.

[8]  Zhi Ning Chen,et al.  Proximity Effects of Metallic Environments on High Frequency RFID Reader Antenna: Study and Applications , 2007, IEEE Transactions on Antennas and Propagation.

[9]  Byunggil Yu,et al.  Balanced RFID Tag Antenna Mountable on Metallic Plates , 2006, 2006 IEEE Antennas and Propagation Society International Symposium.

[10]  Shengli Lai,et al.  Solutions of Metal Surface Effect for HF RFID Systems , 2007, 2007 International Conference on Wireless Communications, Networking and Mobile Computing.

[11]  Paul Golding,et al.  Work in Progress: Performance and Reliability of Radio Frequency Identification (RFID) Library System , 2007, 2007 International Conference on Multimedia and Ubiquitous Engineering (MUE'07).

[12]  Anand Kulkarni,et al.  The Practical Feasibility of Using RFID in a Metal Environment , 2007, 2007 IEEE Wireless Communications and Networking Conference.