Design of a passive RFID tag antenna at 2.45 GHz for mounting on various platforms

This paper presents the design of a passive RFID tag antenna operating at 2.45 GHz. The electromagnetic simulation software called CST is used for design and simulation. A high gain (5.842dB), a good impedance matching with the microchip (−30.0 dB Return Loss) and a satisfactory read range performance (upto 5 m) was obtained. One approach of designing RFID tag is that the tag should be less sensitive to the various types of objects. The effects of obstacles on antenna's characteristics have been investigated by placing the tag antenna against a metallic, rubber, glass and wood surfaces. Simulation results show slight variations which is within tolerance range.

[1]  P. Raumonen,et al.  Folded dipole antenna near metal plate , 2003, IEEE Antennas and Propagation Society International Symposium. Digest. Held in conjunction with: USNC/CNC/URSI North American Radio Sci. Meeting (Cat. No.03CH37450).

[2]  Cheol-Sig Pyo,et al.  Shorted Microstrip Patch Antenna Using Inductively Coupled Feed for UHF RFID Tag , 2008 .

[3]  Daniel M. Dobkin,et al.  Environmental Effects on RFID Tag Antennas , 2005, IEEE MTT-S International Microwave Symposium Digest, 2005..

[4]  Jerry Banks,et al.  RFID Applied , 2007 .

[5]  J.T. Prothro,et al.  The Effects of a Metal Ground Plane on RFID Tag Antennas , 2006, 2006 IEEE Antennas and Propagation Society International Symposium.

[6]  Hosung Choo,et al.  Design of Novel RFID Tag Antennas for Metallic Objects , 2006, 2006 IEEE Antennas and Propagation Society International Symposium.

[7]  H. Kwon,et al.  Compact slotted planar inverted-F RFID tag mountable on metallic objects , 2005 .

[8]  L. Ukkonen,et al.  Planar wire-type inverted-F RFID tag antenna mountable on metallic objects , 2004, IEEE Antennas and Propagation Society Symposium, 2004..

[9]  L. Ukkonen,et al.  Patch antenna with EBG ground plane and two-layer substrate for passive RFID of metallic objects , 2004, IEEE Antennas and Propagation Society Symposium, 2004..

[10]  Cheol Sig Pyo,et al.  An RFID Tag Using a Planar Inverted-F Antenna Capable of Being Stuck to Metallic Objects , 2006 .

[11]  Hae-Won Son,et al.  Orthogonally proximity‐coupled patch antenna for a passive RFID tag on metallic surfaces , 2007 .

[12]  Constantine A. Balanis,et al.  Antenna Theory: Analysis and Design , 1982 .

[13]  Byunggil Yu,et al.  RFID tag antenna using two‐shorted microstrip patches mountable on metallic objects , 2007 .