The Effect of Curvature on the Performance and Readability of Passive UHF RFID Tags
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The Effect of Curvature on the Performance and Readability of Passive UHF RFID TagsAbstract
In this paper, the effect of curvature on the passive UHF RFID tag is studied. Maxwell’s equations are used to depict the typical curved passive tag and are used to study the theoretical limitations of a tag operating under curvatures at its normal axes. This theoretical framework is then used to analyze the typical tag for various curvatures. Here, the analysis is conducted to derive the effect of curvature on the optimal impedances for ASIC load matching, as well as gain. This analytical evaluation is also generalized to describe the shift in center frequency of the tag operation due to tag curvatures. The results derived from this theoretical study on commercially available passive UHF RFID tags are verified with experimental results. It is shown that the curvature of passive UHF RFID tags have a significant impact on the performance and readability at values of ?? > ?????, and reaches a breakdown on conformity at curvature values of ?? = 4?????.
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References
H. Vogt, “Efficient Object Identification with
Passive RFID Tags”, Int. Conf. on Pervasive
Computing, No. 2424, pp. 98-113, 2002.
R. Glidden, “Design of ultra-low-cost UHF
RFID tags for supply chain applications”,
IEEE Communication Magazine, Vol. 42, No.
, pp .140-151, 2004.
P. V. Nikitin, K. V. S. Rao, and R. D.
Martinez, “Differential RCS of RFID tag”,
Electronics Letters, Vol. 43, No. 8, pp. 431-
, 2007.
D. D. Arumugam, D.W. Engels, and A. Modi,
“Environmental and performance analysis of
SAW-based RFID systems”, Int. J. Radio
Frequency Identification Technology and
Applications, Vol. 1, No. 2, pp. 203-235,
D. D. Arumugam, A. Vijayakrishnan, D. W.
Engels, and A. Modi, “2D localisation using
SAW-based RFID systems: a single antenna
approach”, Int. J. Radio Frequency
Identification Technology and Applications,
Vol. 1, No. 4, pp. 417-438, 2007.
D. D. Arumugam, and D. W. Engels,
“Characterization of RF Propagation in
Helical and Toroidal Metal Pipes for Passive
RFID Systems”, IEEE Int. Conf. on RFID,
Vol. 39, No. 1, pp. 61-62, 2008.
ACES JOURNAL, VOL. 25, NO. 3, MARCH 2010
D. D. Arumugam and D. W. Engels,
“Characterisation of RF Propagation in Metal
Pipes for Passive RFID Systems”, Int. J.
Radio Frequency Identification Technology
and Applications, Vol. 1, No. 3, pp. 303-343,
D. D. Arumugam and D. W. Engels,
“Characterisation of RF Propagation in
Rectangular Metal Pipes for Passive RFID
Systems”, Int. J. Radio Frequency
Identification Technology and Applications,
Vol. 1, No. 4, pp. 345-362, 2007.
P. V. Nikitin and K. V. S. Rao, “Theory and
measurement of backscattering from RFID
tags”, IEEE Trans. on Antennas and
Propagation, Vol. 48, No. 6, pp. 212-218,
K. V. S. Rao, “An overview of backscattered
radio frequency identification system (RFID)”,
Asia Pacific Microwave Conference, Vol. 3,
pp. 746-749, 1999.
K. V. S. Rao, P.V. Nikitin, and S.F. Lam,
“Antenna design for UHF RFID tags: A
review and a practical application”, IEEE
Trans. on Antennas and Propagation, Vol. 53,
No. 12, pp. 3870-3876, 2005.
M. E. Schaffrath, L. Ukkonen, L. T.
Sydanheimo, and M. A. Kivikoski, “RFID
Antenna Designs for Paper Industry
Applications: Passive Bow-Tie-Transponder
Performance Analysis”, IASTED Int. Conf. on
Antennas, Radar, and Wave Propagation, pp.
–353, 2005.
L. Sydanheimo, L. T. Ukkonen, and M.
Kivikoski, “Effects of Size and Shape of
Metallic Objects on Performance of Passive
Radio Frequency Identification”, IEEE/ACES
Int. Conf. on Wireless Communications and
Applied Computational Electromagnetics, pp.
-181, 2006.
G. Kumar and K. P. Ray, Broadband
Microstrip Antennas, Artech House, 2003.
K. D. Laakmann and W. H. Steier,
“Waveguides: Characteristic Modes of Hollow
Rectangular Dielectric Waveguides,” Applied
Optics, Vol. 15, pp. 1334-1340, 1976.
J. M. Molina-Garcia-Pardo, M. Lienard, P.
Degauque, D. G. Dudley and L. Juan-Llacer,
“MIMO Channel Characteristics in
Rectangular Tunnels from Modal Theory,”
IEEE Transactions on Vehicular Technology,
S. F. Mahmoud and J. R. Wait, “Guided
Electromagnetic Waves in a Curved
Rectangular Mine Tunnel,” Radio Science,
Vol. 9, pp. 567-572, 1974.
M. A. K. Hamid, W. M. Boerner, L. Shafai,
S. J. Towaij, W. P. Alsip, and G. J. Wilson,
“Radiation Characteristics of Bent-Wire
Antennas”, Electromagnetic Compatibility,
IEEE Transactions on, Vol. 12, No. 3, pp.
-111, Aug. 1970.
G. Burrell, “ Propagation of current on bent
wire antennas-an experimental study”,
Antennas and Propagation, IEEE
Transactions on, Vol. 26, No. 3, pp. 427-434,
May 1978.
S. Egashira, M. Taguchi, and A. Sakitani,
“Consideration on the measurement of current
distribution on bent wire antennas”, Antennas
and Propagation, IEEE Transactions on, Vol.
, No. 7, pp. 918-926, July 1988.
S . Y. Y. Leung and D. C. C. Lam,
“Performance of Printed Polymer-Based RFID
Antenna on Curvilinear Surface”, Electronics
Packaging Manufacturing, IEEE Transactions
on, Vol. 30, No. 3, pp. 200-205, July 2007
X. Zhou and G. Wang, “Study on the
influence of curving of tag antennas on
performance of RFID system,” 4th
International Conference on Microwave and
Millimeter Wave Technology Proceedings
(IEEE Cat. No.04EX827), pp. 122-125, 2004.
H.-T. Hsu, H.-T. Chou, and W.-W. Lee,
“Performance degradation of RFID system
due to curving in tag antenna through Radar
Cross Section (RCS) analysis,” 2007 IEEE
Antennas and Propagation Society
International Symposium, pp. 1197-2000,
Y. Tikhov and J. H. Won, “Impedance-
matching arrangement for microwave
transponder operating over plurality of bent
installations of antenna,” Electronics Letters,
Vol. 40, No. 10, pp. 574-575, May 2004.
J. Siden, P. Jonsson, T. Olsson, and G. Wang,
"Performance degradation of RFID system
due to the distortion in RFID tag antenna”,
Microwave and Telecommunication
Technology, 11th International Conference on,
pp. 371-373, 2001.
ARUMUGAM, ENGELS, MICKLE: EFFECT OF CURVATURE ON PERFORMANCE AND READABILITY OF RFID TAGS
C. A. Balanis, Antenna Theory: Analysis and
Design, John-Wiley and Sons Publishing
Company, 2005.
D. K. Cheng, Fundamentals of Engineering
Electromagnetics, Addison-Wesley Publishing
Company, 1993.
R. Fletcher, U. P. Marti, and R. Redemske,
“Study of UHF RFID signal propagation
through complex media”, IEEE Int. Symp. on
Antennas and Propagation Society, Vol. 1B,
pp. 747-750, 2005
