Passive RFID Uplink and Downlink Link Budget and Comparison of ASK and BPSK Backscatter Modulations
Passive RFID Uplink and Downlink Link Budget and Comparison of ASK and BPSK Backscatter Modulations
Complete link budget for forward and backward link in a RFID system are given with constituent parts. Backward link signal levels with current improvements requires separate TX and RX antenna bistatic configuration to overcome reader threshold. To further elaborate on link budgets, reflection coefficient and power equations are obtained from a RFID front-end model with circuit theory and shown on a passive RFID system. It is demonstrated that both forward and backward links have limitations on the range depending upon tag power dissipation, antennas in use and type of modulation. To make two distances equal, parameters are found from two way link equations. Then, ASK and BPSK modulations are compared on communication distance for given average backscatter difference power, minimum SNR to targeted BER on the reader by the equations obtained on the circuit model and MATLAB simulations.
Keywords:
RFID, RFID link budget, reflection coefficient, transmitted power, reflected power, ASK and BPSK backscatter modulation BER,
___
- [1] P. Nikitin and K. V. . Rao, “Theory and measurement of backscattering from RFID tags,” IEEE Antennas Propag. Mag., vol. 48, no. 6, pp. 212–218, Dec. 2006.
- [2] S. S. Srikant and R. P. Mahapatra, “Read Range of UHF Passive RFID,” Int. J. Comput. Theory Eng., vol. 2, no. 3, pp. 323--325, 2010.
- [3] Y. Gao, Z. Zhang, H. Lu, and H. Wang, “Analysis and calculation of read distance in passive backscatter RFID systems,” LISS 2012 - Proc. 2nd Int. Conf. Logist. Informatics Serv. Sci., vol. 2, no. 1, pp. 905–912, 2013.
- [4] J. D. Griffin and G. D. Durgin, “Complete Link Budgets for Backscatter-Radio and RFID Systems,” IEEE Antennas Propag. Mag., vol. 51, no. 2, pp. 11–25, Apr. 2009.
- [5] P. Nikitin, K. V. S. Rao, S. Lam, and W. Ave, “UHF RFID TAG CHARACTERIZATION : OVERVIEW AND STATE-OF-THE-ART,” no. 2, pp. 2–7.
- [6] F. a. Hussien, D. Z. Turker, R. Srinivasan, M. S. Mobarak, F. P. Cortes, and E. Sanchez-Sinencio, “
Design considerations and tradeoffs for passive RFID tags ,” vol. 5837, pp. 559–570, Jun. 2005. - [7] U. Karthaus and M. Fischer, “Fully Integrated Passive UHF RFID Transponder IC With 16 . 7- W Minimum RF Input Power,” vol. 38, no. 10, pp. 1602–1608, 2003.
- [8] M. Viswanathan and S. Edition, “SIMULATION OF DIGITAL COMMUNICATION SYSTEMS USING MATLAB.”
- [9] P. Note, “ERC Recommendation 70-03,” no. February, 2014.
- [10] M. H. Ouda et al., “for Implantable Intraocular Pressure Monitoring,” pp. 1–8.
- [11] K. Kotani, A. Sasaki, T. Ito, and S. Member, “High-Efficiency Differential-Drive CMOS Rectifier,” vol. 44, no. 11, pp. 3011–3018, 2009.
- [12] R. Vaddi, R. P. Agarwal, S. Dasgupta, and T. T. Kim, “Design and Analysis of Double-Gate MOSFETs for Ultra-Low Power Radio Frequency Identification (RFID): Device and Circuit Co-Design,” J. Low Power Electron. Appl., vol. 1, no. 3, pp. 277–302, Jul. 2011.
- [13] W. Shi, C. S. Choy, J. Guo, C. F. Chan, K. N. Leung, and K. P. Pun, “A 90nm RFID tag’s baseband processor with novel PIE decoder and uplink clock generator,” Midwest Symp. Circuits Syst., pp. 644–647, 2010.
- [14] By and M. Viswanathan, “Simulation of Digital Communication Systems using Matlab,” p. 292, 2013.
- ISSN: 1301-4048
- Yayın Aralığı: Yılda 6 Sayı
- Başlangıç: 1997
- Yayıncı: Sakarya Üniversitesi Fen Bilimleri Enstitüsü
Sayıdaki Diğer Makaleler
Autonomous flight performance improvement of the morphing aerial robot by aerodynamic shape redesign
Harun ÇELİK, Tuğrul OKTAY, Metin UZUN
Passive RFID Uplink and Downlink Link Budget and Comparison of ASK and BPSK Backscatter Modulations