PIER
 
Progress In Electromagnetics Research
ISSN: 1070-4698, E-ISSN: 1559-8985
Home | Search | Notification | Authors | Submission | PIERS Home | EM Academy
Home > Vol. 81 > pp. 359-370

CHIP IMPEDANCE MATCHING FOR UHF RFID TAG ANTENNA DESIGN

By C.-H. Loo, K. Elmahgoub, F. Yang, A. Z. Elsherbeni, D. Kajfez, A. A. Kishk, T. Elsherbeni, L. Ukkonen, L. Sydanheimo, M. Kivikoski, S. Merilampi, and P. Ruuskanen

Full Article PDF (595 KB)

Abstract:
Passive UHF RFID tag consists of a microchip attached directly to an antenna. Proper impedance match between the antenna and the chip is crucial in RFID tag design. It directly influences RFID system performance characteristics such as the range of a tag. It is known that an RFID microchip is a nonlinear load whose complex impedance in each state varies with the frequency and the input power. This paper illustrates a proper calculation of the tag power reflection coefficient for maximum power transfer by taking into account of the changing chip impedance versus frequency.

Citation: (See works that cites this article)
C.-H. Loo, K. Elmahgoub, F. Yang, A. Z. Elsherbeni, D. Kajfez, A. A. Kishk, T. Elsherbeni, L. Ukkonen, L. Sydanheimo, M. Kivikoski, S. Merilampi, and P. Ruuskanen, "Chip impedance matching for UHF RFID tag antenna design," Progress In Electromagnetics Research, Vol. 81, 359-370, 2008.
doi:10.2528/PIER08011804
http://www.jpier.org/PIER/pier.php?paper=08011804

References:
1. Avery Dennison http://www.rfid.averydennison.com/us/index.php., Avery Dennison http://www.rfid.averydennison.com/us/index.php..

2. Ansoft HFSS (High Frequency Structure Simulator) http://www.ansoft.com/products/hf/hfss/, Ansoft HFSS (High Frequency Structure Simulator) http://www.ansoft.com/products/hf/hfss/.

3. Voyantic TagformanceTM Lite: http://www.voyantic.com., Voyantic TagformanceTM Lite: http://www.voyantic.com..

4. Agilent 89600 Series Vector Signal Analysis Software Option BHC: RFID Modulation Analysis: Technical Overview and Demostration Guide., Agilent 89600 Series Vector Signal Analysis Software Option BHC: RFID Modulation Analysis: Technical Overview and Demostration Guide..

5. Nikitin, P. V. and K. V. S. Rao, "Theory and measurement of backscattering from RFID tags," Antennas and Propagation Magazine, Vol. 48, No. 6, 212-218, 2006.
doi:10.1109/MAP.2006.323323

6. Youla, D. C., On scattering matrices normalized to complex port numbers, Proc. I. R. E., Vol. 49, No. 7, 1961.

7. Nikitin, P. V., K. V. S. Rao, S. F. Lam, V. Pillai, R. Martinez, and H. Heinrich, "Power reflection coefficient analysis for complex impedances in RFID tag design," IEEE Trans. Microwave Theory and Techniques, Vol. 53, No. 9, 2721-2725, 2005.
doi:10.1109/TMTT.2005.854191

8. Kurokawa, K., "Power waves and the scattering matrix," IEEE Trans. Microwave Theory and Techniques, Vol. MTT-13, No. 3, 194-202, 1965.
doi:10.1109/TMTT.1965.1125964

9. Fan, Z., S. Qiao, H.-F. Jiang Tao, and L.-X. Ran, "Signal descriptions and formulations for long range UHF RFID readers," Progress In Electromagnetics Research, Vol. 71, 109-127, 2007.
doi:10.2528/PIER07021501

10. Kim, D.-Y., J.-G. Yook, H.-G Yoon, and B.-J. Jang, "Interference analysis of UHF RFID systems," Progress In Electromagnetics Research B, Vol. 4, 115-126, 2008.

11. Zhang, M., Y. Chen, Y. Jiao, and F.Zhang, "Dual circularly polarized antenna of compact structure for RFID application," Journal of Electromagnetic Waves and Applications, Vol. 20, No. 14, 1895-1902, 2006.
doi:10.1163/156939306779322611

12. Yarkoni, N. and N. Blaunstein, "Prediction of propagation characteristics in indoor radio communication environments," Progress In Electromagnetics Research, Vol. 59, 151-174, 2006.
doi:10.2528/PIER05090801

13. Martinez, D., F. Las-Heras, and R. G. Ayestaran, "Fast methods for evaluating the electric field level in 2D-indoor environments," Progress In Electromagnetics Research, Vol. 69, 247-255, 2007.
doi:10.2528/PIER06122105

14. Fan, Z., S. Qiao, H.-F. Jiang Tao, and L.-X. Ran, "A miniaturized printed dipole antenna with V-shaped ground for 2.45 Ghz RFID readers," Progress In Electromagnetics Research, Vol. 71, 149-158, 2007.
doi:10.2528/PIER07022501

15. Mitilineos, S. A., S. C. A. Thomopoulos, and C. N. Capsalis, "Genetic design of dual-band, switched-beam dipole arrays, with elements failure correction, retaining constant excitation coefficients," Journal of Electromagnetic Waves and Applications, Vol. 20, No. 14, 1925-1942, 2006.
doi:10.1163/156939306779322738

16. Lei, J., et al., "An omnidirectional printed dipole array antenna with shaped radiation pattern in the elevation plane," Journal of Electromagnetic Waves and Applications, Vol. 20, No. 14, 1955-1966, 2006.
doi:10.1163/156939306779322639

17. Ayestaran, R. G., J. Laviada, and F. Las-Heras, "Synthesis of passive-dipole arrays with a genetic-neural hybrid method," Journal of Electromagnetic Waves and Applications, Vol. 20, No. 15, 2123-2135, 2006.
doi:10.1163/156939306779322549

18. Hussein, K. A., "Effect of internal resonance on the radar cross section and shield effectiveness of open spherical enclosures," Progress In Electromagnetics Research, Vol. 70, 225-246, 2007.
doi:10.2528/PIER07012101

19. Khaleghi, A., "Diversity techniques with parallel dipole antennas: Radiation pattern analysis," Progress In Electromagnetics Research, Vol. 64, 23-42, 2006.
doi:10.2528/PIER06062401


© Copyright 2014 EMW Publishing. All Rights Reserved