Passive tag-to-tag communication

In this paper, we describe a novel passive RFID system capable of direct tag-to-tag communication in the presence of external radio frequency field. Tags talk by modulating the external field and thus backscattering the commands to each other. We present the system concept and show its hardware implementation based on TI MSP430 microcontroller. We also provide the theoretical model for modulation depth vs. distance which agrees with experimental results (maximum tag-to-tag communication distance). Finally, we discuss possible applications and outline future work.

[1]  K. V. S. Rao,et al.  RFID paperclip tags , 2011, 2011 IEEE International Conference on RFID.

[2]  J. Taylor,et al.  On the concept of near field radar cross section , 1997, IEEE Antennas and Propagation Society International Symposium 1997. Digest.

[3]  Rich Redemske,et al.  Design of UHF RFID emulators with applications to RFID testing and data transport , 2005, Fourth IEEE Workshop on Automatic Identification Advanced Technologies (AutoID'05).

[4]  S. Lindenmeier,et al.  Efficient modelling of the near field coupling between phased array antennas , 2003, 33rd European Microwave Conference Proceedings (IEEE Cat. No.03EX723C).

[5]  Russell Tessier,et al.  The design and assessment of a secure passive RFID sensor system , 2011, 2011 IEEE 9th International New Circuits and systems conference.

[6]  Terry T. Ye,et al.  The “weak spots” in stacked UHF RFID tags in NFC applications , 2010, 2010 IEEE International Conference on RFID (IEEE RFID 2010).

[7]  G Marrocco,et al.  RFID Grids: Part I—Electromagnetic Theory , 2011, IEEE Transactions on Antennas and Propagation.

[8]  A. Ludwig,et al.  A new method for calculating correction factors for near-field gain measurements , 1973 .

[9]  Hyoung-Hwan Roh,et al.  Extending the Interrogation Range of a Passive UHF RFID System With an External Continuous Wave Transmitter , 2010, IEEE Transactions on Instrumentation and Measurement.

[10]  Xianming Qing,et al.  Segmented loop antenna for UHF near-field RFID applications , 2009 .

[11]  K. V. S. Rao,et al.  LabVIEW-Based UHF RFID Tag Test and Measurement System , 2009, IEEE Transactions on Industrial Electronics.

[12]  A. Kay,et al.  Near-field gain of aperture antennas , 1960 .

[13]  P.V. Nikitin,et al.  An Overview of Near Field UHF RFID , 2007, 2007 IEEE International Conference on RFID.

[14]  Paul Svasta,et al.  An RFID tag simulator based on the Atmel AT91SAM7S64 micro–controller , 2010, 33rd International Spring Seminar on Electronics Technology, ISSE 2010.

[15]  G. Manzi,et al.  Modeling and Performance Characterization of UHF RFID Portal Applications , 2009, IEEE Transactions on Microwave Theory and Techniques.

[16]  Manfred Josef Aigner,et al.  Semi-passive RFID development platform for implementing and attacking security tags , 2010, 2010 International Conference for Internet Technology and Secured Transactions.

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

[18]  Osamu Takyu,et al.  Analysis of read range for UHF passive RFID tags in close proximity with dynamic impedance measurement of tag ICs , 2011, 2011 IEEE Radio and Wireless Symposium.

[19]  Terry T. Ye,et al.  Performance analysis of stacked RFID tags , 2009, 2009 IEEE International Conference on RFID.

[20]  Wang Zhihua,et al.  Low modulation index RF signal detection for a passive UHF RFID transponder , 2009 .

[21]  K. V. S. Rao,et al.  Phase based spatial identification of UHF RFID tags , 2010, 2010 IEEE International Conference on RFID (IEEE RFID 2010).

[22]  Johann Holm,et al.  A comparison of TTF and RTF UHF RFID protocols , 2010 .

[23]  J. Pace,et al.  Asymptotic formulas for coupling between two antennas in the Fresnel region , 1969 .

[24]  Osamu Takyu,et al.  Change of read range for UHF passive RFID tags in close proximity , 2009, 2009 IEEE International Conference on RFID.

[25]  David Wetherall,et al.  A "Gen 2" RFID monitor based on the USRP , 2010, CCRV.

[26]  Luca Catarinucci,et al.  Design and applications of a Software-Defined listener for UHF RFID systems , 2011, 2011 IEEE MTT-S International Microwave Symposium.

[27]  Alanson P. Sample,et al.  Design of an RFID-Based Battery-Free Programmable Sensing Platform , 2008, IEEE Transactions on Instrumentation and Measurement.

[28]  Thomas Faseth,et al.  An UHF RFID tag emulator for precise emulation of the physical layer , 2010, The 40th European Microwave Conference.

[29]  F. De Flaviis,et al.  A UHF Near-Field RFID System With Fully Integrated Transponder , 2008, IEEE Transactions on Microwave Theory and Techniques.