The increasing need for automatic identification and object tracking in supply chains has led to the development of radio frequency identification (RFID) systems. High frequency (HF) and ultra-high frequency (UHF) bands are frequently used because of their advantages over other bands. Although many HF and UHF band tags exist, some are unsuitable to handle the hostile environment of a supply chain. Therefore, this paper contributes to the research on a dual band RFID tag antenna operating on both the HF (13.56 MHz) and the UHF (919 MHz to 923 MHz) band, the UHF band used in Malaysia, by embracing the advantages of both HF and UHF bands to overcome the previously mentioned problems. The compact design is constructed by locating the UHF band antenna inside the HF band antenna and by reducing the number of turns of the HF band antenna compared to previous designs. The -10 dB bandwidth for the proposed design covers 12.9 MHz to 14.2 MHz for the HF band and 914.0 MHz to 929.0 MHz for the UHF band. The proposed antenna also overcomes the degradation problem by obtaining a high efficiency around 94% and a gain of 3.709 dB.
2. Leong, K. S. , M. L. Ng, and H. C. Peter, "Dual-frequency antenna design for RFID application," 21st International Technical Conference on Circuits/Systems, Computers and Communication (ITC-CSCC 2006), Chiang Mai, Thailand, 2006.
3. Huang, J. Z., P. H. Yang, W. C. Chew, and T. Y. Terry, "A novel broadband patch antenna for universal UHF RFID tags," Microwave and Optical Technology Letters, Vol. 52, No. 12, 2653-2657, December 2010.
4. Minan, N. A. S., "Industry readiness and policy regarding RFID implementation in Malaysia," EPCglobal Malaysia EPC/RFID Conference 2007, 2007.
5. Dobkin, D. M., The RF in RFID: Passive UHF RFID in Practice, Elsevier Inc., 2008.
6. Wang, D., L. Xu, H. Huang, and D. Sun, "Optimization of tag antenna for RFID system," International Conference on Information Technology and Computer Science, ITCS 2009, 2009.
7. Microchip Technology Incorporated, 13.56 MHz RFID System Design Guide, 2004.
8. Loo, C. H., K. Elmahgoub, F. Yang, A. Z. Elsherbeni, D. Kajfez, A. A. Kishk, T. Elsherbeni, L. Ukkonen, L. Sydanheimo, and M. Kivikoski, "Chip impedance matching for UHF RFID tag antenna design," Progress In Electromagnetics Research,, Vol. 81, 359-370, 2008.
9. Bjorninen, T., et al., "Design and RFID signal analysis of a meander line UHF RFID tag antenna," IEEE Antennas and Propagation Society International Symposium, AP-S 2008, 2008.
10. Huang, J. Z., P. H. Yang, W. C. Chew, and T. T. Ye, "A novel broadband patch antenna for universal UHF RFID tags," Microwave and Optical Technology Letters, Vol. 52, No. 12, 2653-2657, 2010.
11. Kwon, H. and B. Lee, "Compact slotted planar inverted-F RFID tag mountable on metallic objects," Electronics Letters, Vol. 41, No. 24, 1308-1310, 2005.
12., , IEEE Standard Test Procedures for Antennas, ANSI/IEEE Std 149-1979, 1979.
13. Leong, K. S., M. L. Ng, and P. H. Cole, "Dual-frequency antenna design for RFID application," Proc. International Technical Conference on Circuits/Systems, Computers and Communications, 2006.
14. Mayer, L. W. and A. L. Scholtz, "A dual-band HF/UHF antenna for RFID tags," Vehicular Technology Conference, 2008.
15. Iliev, P., P. Le Thuc, C. Luxey, and R. Staraj, "Dual-band HF-UHF RFID tag antenna," Electronics Letters, Vol. 45, No. 9, 439-441, 2009.
16. Deleruyelle, T., P. Pannier, M. Egels, and E. Bergeret, "Dual band mono-chip HF-UHF tag antenna," Antennas and Propagation Society International Symposium (APSURSI), Vol. 50, No. 8, 1237-1240, 2010.