Design of a Miniaturized Meandered Line Antenna for UHF RFID Tags

A semi-circle looped vertically omnidirectional radiation (VOR) patterned tag antenna for UHF (919–923 MHz for Malaysia) frequency is designed to overcome the impedance mismatch issue in this paper. Two impedance matching feeding strips are used in the antenna structure to tune the input impedance of the antenna. Two dipole shaped meandered lines are used to achieve a VOR pattern. The proposed antenna is designed for 23-j224 Ω chip impedance. The antenna is suitable for ‘place and tag’ application. A small size of 77.68×35.5 mm2 is achieved for a read range performance of 8.3 meters using Malaysia regulated maximum power transfer of 2.0 W effective radiated power (ERP).

[1]  Horng-Dean Chen,et al.  Circularly Polarized Loop Tag Antenna for Long Reading Range RFID Applications , 2013, IEEE Antennas and Wireless Propagation Letters.

[2]  Jun Zhang,et al.  A Miniaturized Via-Patch Loaded Dual-Layer RFID Tag Antenna for Metallic Object Applications , 2013, IEEE Antennas and Wireless Propagation Letters.

[3]  Giorgio Montisci,et al.  A Wideband PET Inkjet-Printed Antenna for UHF RFID , 2013, IEEE Antennas and Wireless Propagation Letters.

[4]  J. Glower,et al.  A Compact Meander-Line UHF RFID Tag Antenna Loaded With Elements Found in Right/Left-Handed Coplanar Waveguide Structures , 2009, IEEE Antennas and Wireless Propagation Letters.

[5]  Daniel D. Deavours,et al.  A circularly polarized planar antenna modified for passive UHF RFID , 2009, 2009 IEEE International Conference on RFID.

[6]  Sean V. Hum,et al.  A Low-Profile Antenna With Quasi-Isotropic Pattern for UHF RFID Applications , 2013, IEEE Antennas and Wireless Propagation Letters.

[7]  Mohammad Tariqul Islam,et al.  New Compact Dual-Band Circularly Polarized Universal RFID Reader Antenna Using Ramped Convergence Particle Swarm Optimization , 2014, IEEE Transactions on Antennas and Propagation.

[8]  Hosung Choo,et al.  Design of a Circularly Polarized Tag Antenna for Increased Reading Range , 2009, IEEE Transactions on Antennas and Propagation.

[9]  Eveliina Koski,et al.  Radiation Efficiency Measurement Method for Passive UHF RFID Dipole Tag Antennas , 2013, IEEE Transactions on Antennas and Propagation.

[10]  R. Abhari,et al.  Design and Experimental Evaluation of Miniaturized Monopole UHF RFID Tag Antennas , 2012, IEEE Antennas and Wireless Propagation Letters.

[11]  Xianming Qing,et al.  Impedance Characterization of RFID Tag Antennas and Application in Tag Co-Design , 2009, IEEE Transactions on Microwave Theory and Techniques.

[12]  Sailing He,et al.  Capacitively Loaded, Inductively Coupled Fed Loop Antenna With an Omnidirectional Radiation Pattern for UHF RFID Tags , 2013, IEEE Antennas and Wireless Propagation Letters.