By Stevan Preradovic
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Extra resources for Advanced Radio Frequency Identification Design and Applications
2005). Environmental effects on RFID tag antennas. IEEE International Microwave Symposium Digest, Vol. 5, No. 1, pp. 247–250, Jun. 2005.  Finkenzeller, K. (2003). , John Wiley and Sons, ISBN: 9780470844021.  Fujitsu Microelectronics Limited. Ferroelectric RAM, RFID Journal Apr. 2006. ; & Falciasecca, G. (2008). Electromagnetic and System Level Co-Simulation for RFID Radio Link Modeling in Real Environment. The Second European Conference on Antennas and Propagation, pp. 1–8, Nov. 2007. ; & Falciasecca, G.
Fig. 29. Measured radiation pattern. 5. References Andrenko A. , (2005). , Pages:1-6, Oct. 2008. Balanis C. , (1997), Antenna Theory Analysis and Design, Jhon Whily, New York, (2nd Edition). Baliarda C. , M. (2000), The Koch monopole: A small fractal antenna. IEEE Trans. 48, (2000) page numbers (1773-1781). Curty J. , Dehollain C. & Joehl N. , (2007). Design and Optimization of Passive UHF RFID Systems, Springer, ISBN: 0-387-35274-0, New Jersey. Sabaawi A. M. , Abdulla A. , Sultan Q. , (2010), Design a New Fractal Loop Antenna For UHF RFID Tags Based On a Proposed Fractal Curve, Proceedings of The 2nd IEEE International Conference on Computer Technology and Development (ICCTD 2010) November 2-4, 2010, Cairo, Egypt.
A 50Ω coaxial cable type RG58/U and BNC connector is connected to the fabricated antenna. In order to obtain balanced currents, Bazooka balun is used. The performance of the fabricated antennas is verified by measurements. Radiation pattern is measured in anechoic chamber. The return loss of the fabricated loop antenna is measured using MOTECH RF-2000 analyzer as shown in Fig. 28. Fig. 27. The Fabricated Fractal Loop Antenna. Fig. 28. Measured RL of the fabricated fractal loop antenna. 2 MHz) compared with the simulated bandwidth of (59 MHz).