Vol. 101

Front:[PDF file] Back:[PDF file]
Latest Volume
All Volumes
All Issues
2021-03-10

Compact Metal-Mountable UHF RFID Tag Antenna with Two Large C-Shaped Slots for on-the-Fly Tuning

By Fwee-Leong Bong, Kunalen Thirappa, Eng Hock Lim, and Kogulabalan Perumal
Progress In Electromagnetics Research M, Vol. 101, 173-183, 2021
doi:10.2528/PIERM21010102

Abstract

A compact folded-patch UHF RFID tag antenna (30 mm × 30 mm × 3 mm or 0.0912λ × 0.0912λ × 0.009λ) is proposed for metallic surface applications. Two large C-shaped slots, which can be easily tuned by adjusting their lengths, are incorporated into the folded-patch for providing tuning mechanisms that can be employed in the production line for tuning the tag resonant frequency on the fly. The slots are tactfully embedded into the patch structure so that they occupy no footprint. The slots are large enough so that their lengths can be easily adjusted by employing a penknife and some copper tapes. This provides an impromptu tuning mechanism so that the tag resonant frequency can be easily corrected in the production line. With reference to the effective isotropic radiated power of 4 W, the proposed tag antenna can be read from 10 m on metal. The read range is found to be able to go beyond 5.5 m when the tag is placed on a dielectric with permittivity ranging from 1 to 12.

Citation


Fwee-Leong Bong, Kunalen Thirappa, Eng Hock Lim, and Kogulabalan Perumal, "Compact Metal-Mountable UHF RFID Tag Antenna with Two Large C-Shaped Slots for on-the-Fly Tuning," Progress In Electromagnetics Research M, Vol. 101, 173-183, 2021.
doi:10.2528/PIERM21010102
http://www.jpier.org/PIERM/pier.php?paper=21010102

References


    1. UHF RFID Tags, "Smart retail solution,", http://www.thinkgo.co/pinguan-iot-technology-co-ltd-rfid-label-15833051498388722.html.

    2. Dobkin, D. M. and S. M. Weigand, "Environmental effects on RFID tag antennas," IEEE MIT-S Int. Microw. Symp. Dig., 135-138, Jun. 2005, doi: 10.1109/MWSYM.2005.1516541.
    doi:10.1049/el.2013.2671

    3. Park, I. Y. and D. Kim, "Artificial magnetic conductor loaded long-range passive RFID tag antenna mountable on metallic objects," Electron. Lett., Vol. 50, No. 5, 335-336, Feb. 2014, doi: 10.1049/el.2013.2671.
    doi:10.1109/LAWP.2012.2227291

    4. Babar, A. A., T. Björninen, V. A. Bhagavati, L. Sydänheimo, P. Kallio, and L. Ukkonen, "Small and flexible metal mountable passive UHF RFID tag on high-dielectric polymer-ceramic composite substrate," IEEE Antennas Wave Propag. Lett., Vol. 11, 1319-1322, 2012, doi: 10.1109/LAWP.2012.2227291.
    doi:10.1109/TAP.2016.2633903

    5. Bong, F. L., E. H. Lim, and F. L. Lo, "Flexible folded-patch antenna with serrated edges for metal-mountable UHF RFID tag," IEEE Trans. Antennas Propag., Vol. 65, No. 2, 873-877, Feb. 2017, doi: 10.1109/TAP.2016.2633903.
    doi:10.1109/TAP.2018.2821702

    6. Ng, W. H., E. H. Lim, F. L. Bong, and B. K. Chung, "Folded dipolar patch antenna with tunable inductive slots and stubs for UHF tag design," IEEE Trans. Antennas Propag., Vol. 66, No. 6, 2799-2806, Jun. 2018, doi: 10.1109/TAP.2018.2821702.

    7. ECCOSTOCK PP, accessed on Dec. 14, 2011. [Online]. Available: http://www.eccosorb.com/Collateral/Documents/English-US/PP.pdf.
    doi:10.1109/TAP.2017.2676776

    8. Bong, F. L., E. H. Lim, and F. L. Lo, "Compact folded dipole with embedded matching loop for universal tag applications," IEEE Trans. Antennas Propag., Vol. 65, No. 5, 2173-2181, May 2017, doi: 10.1109/TAP.2017.2676776.

    9. Monza R6 Tag Chip Datasheet, Rev 3, document IPJ-W1700, Impinj, Inc., Seattle, WA, USA, Dec. 2014.
    doi:10.1049/el.2012.2813

    10. Manzari, S., S. Pettinari, and G. Marrocco, "Miniaturised wearable UHF-RFID tag with tuning capability," Electron. Lett., Vol. 48, No. 21, 1325-1326, Oct. 2012, doi: 10.1049/el.2012.2813.

    11. VoyanticTagformance Lite. [Online]. Available: https://voyantic.com/products/tagformance-lite.
    doi:10.1109/TAP.2018.2867050

    12. Lee, Y. H., E. H. Lim, F. L. Bong, and B. K. Chung, "Folded antipodal dipole for metal-mountable UHF tag design," IEEE Trans. Antennas Propag., Vol. 66, No. 11, 5698-5705, Nov. 2018.

    13. Silva, S. B. and A. R. Correia, "Minimum activation power of a passive UHF RFID tags: A low cost method," J. Aerosp. Technol. Manag., Vol. 10, e2418, doi: 10.5028/jatm.v10.854.

    14. http://www.nxp.com/documents/application_note/AN162910.pdf.
    doi:10.2528/PIERC11110208

    15. Björninen, T., A. A. Babar, L. Ukkonen, L. Sydanheimo, A. Elsherbeni, and J. Kallioinen, "Compact metal mountable UHF RFID tag on a Barium Titanate based substrate," Progress In Electromagnetics Research C, Vol. 26, 43-57, 2012.
    doi:10.2528/PIERC15071501

    16. Tao, B., H. Sun, and O. M. Ramahi, "RFID tag antenna for metallic or non-metallic surfaces," Progress In Electromagnetics Research C, Vol. 59, 51-57, 2015.

    17. Lee, S. R., E. H. Lim, F. L. Bong, and B. K. Chung, "Miniature folded patch with differential coplanar feedline for metal mountable UHF RFID tag," IEEE J. RFID, Vol. 68, No. 1, 152-160, Jan. 2020.
    doi:10.1109/TAP.2019.2940521

    18. Niew, Y. H., K. Y. Lee, E. H., F. L. Bong, and B. K. Chung, "Miniature dipolar patch antenna with nonresonating ring for metal-insensitive UHF RFID tag design," IEEE Trans. Antennas Propag., Vol. 68, No. 3, 2393-2398, Mar. 2020.
    doi:10.1109/LAWP.2011.2148151

    19. Son, H. W. and S. H. Jeong, "Wideband RFID tag antenna for metallic surfaces using proximity-coupled feed," IEEE Antennas Wireless Propag. Lett., Vol. 10, 377-380, 2011.
    doi:10.1109/LAWP.2013.2281842

    20. Zhang, J. and Y. Long, "A miniaturized via-patch loaded dual-layer RFID tag antenna for metallic object applications," IEEE Antennas Wireless Propag. Lett., Vol. 12, 1184-1187, 2013.