A compact chipless RFID tag using polarization diversity for encoding and sensing

The chipless RFID tag presented exploits the advantage offered by polarization diversity to encode more information within a given surface size. It is based on 3 split ring resonators with variable gap configuration. Depending on the used linear polarization, different resonant modes can be measured for the same resonator so that the coding capacity is increased. Since the used structure is very sensitive to polarization angle, this interesting behavior can be used to detect a rotation angle of an item with 20° of accuracy. On the other hand, contrary to most of chipless tags that need UWB operating frequencies, the proposed tag is based on diversity polarization and only narrow frequency bands are needed. Using only 3 resonant frequencies in the 3.4 GHz to 7.1 GHz band, a capacity of coding of 6 bits is reached within a tag of size 3×3 cm2. Measurements done using a bi-static radar configuration in the frequency domain validate this new concept.

[1]  Li-Rong Zheng,et al.  Design and implementation of a fully reconfigurable chipless RFID tag using Inkjet printing technology , 2008, 2008 IEEE International Symposium on Circuits and Systems.

[2]  I. Robertson,et al.  RF barcodes using multiple frequency bands , 2005, IEEE MTT-S International Microwave Symposium Digest, 2005..

[3]  W. Baechtold,et al.  An active tagging system using circular polarization modulation , 1999, 1999 IEEE MTT-S International Microwave Symposium Digest (Cat. No.99CH36282).

[4]  V. Subramanian,et al.  Printed organic transistors for ultra-low-cost RFID applications , 2004, 4th IEEE International Conference on Polymers and Adhesives in Microelectronics and Photonics, 2004. POLYTRONIC 2004..

[5]  S. Tedjini,et al.  Chipless RFID Tag Using Hybrid Coding Technique , 2011, IEEE Transactions on Microwave Theory and Techniques.

[6]  C. Hartmann,et al.  Anti-collision methods for global SAW RFID tag systems , 2004, IEEE Ultrasonics Symposium, 2004.

[7]  K. Varahramyan,et al.  A Chipless RFID Sensor System for Cyber Centric Monitoring Applications , 2009, IEEE Transactions on Microwave Theory and Techniques.

[8]  C. Hartmann,et al.  A global SAW ID tag with large data capacity , 2002, 2002 IEEE Ultrasonics Symposium, 2002. Proceedings..

[9]  R. Jakoby,et al.  Phase modulation scheme for chipless RFID- and wireless sensor tags , 2009, 2009 Asia Pacific Microwave Conference.

[10]  A. Hoorfar,et al.  Space-filling curve RFID tags , 2006, 2006 IEEE Radio and Wireless Symposium.

[11]  Etienne Perret,et al.  Novel Compact RFID Chipless Tag , 2011 .

[12]  Hsin-Chin Liu,et al.  Passive UHF RFID Tag With Backscatter Diversity , 2011, IEEE Antennas and Wireless Propagation Letters.

[13]  W. Wiesbeck,et al.  Single reference, three target calibration and error correction for monostatic, polarimetric free space measurements , 1991, Proc. IEEE.

[14]  Nemai C. Karmakar,et al.  Design of fully printable planar chipless RFID transponder with 35-bit data capacity , 2009, 2009 European Microwave Conference (EuMC).

[15]  Li Yang,et al.  A Novel Conformal RFID-Enabled Module Utilizing Inkjet-Printed Antennas and Carbon Nanotubes for Gas-Detection Applications , 2009, IEEE Antennas and Wireless Propagation Letters.