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http://dx.doi.org/10.4218/etrij.12.0111.0365

Design of Reader Baseband Receiver Structure for Demodulating Backscattered Tag Signal in a Passive RFID Environment  

Bae, Ji-Hoon (IT Convergence Technology Research Laboratory, ETRI)
Choi, Won-Kyu (IT Convergence Technology Research Laboratory, ETRI)
Park, Chan-Won (IT Convergence Technology Research Laboratory, ETRI)
Pyo, Cheol-Sig (IT Convergence Technology Research Laboratory, ETRI)
Kim, Kyung-Tae (Department of Electronic and Electrical Engineering, Pohang University of Science and Technology)
Publication Information
ETRI Journal / v.34, no.2, 2012 , pp. 147-158 More about this Journal
Abstract
In this paper, we present a demodulation structure suitable for a reader baseband receiver in a passive radio frequency identification (RFID) environment. In a passive RFID configuration, an undesirable DC-offset phenomenon may appear in the baseband of the reader receiver, which can severely degrade the performance of the extraction of valid information from the received tag signal. To eliminate this DC-offset phenomenon, the primary feature of the proposed demodulation structures for the received FM0 and Miller subcarrier signals is to reconstruct the signal corrupted by the DC-offset phenomenon by creating peak signals from the corrupted signal. It is shown that the proposed method can successfully detect valid data, even when the received baseband signal is distorted by the DC-offset phenomenon.
Keywords
RFID; DC-offset phenomenon; demodulation structure; ISO 18000-6C;
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  • Reference
1 "Automatic Identification and Data Capture Techniques - Air Interface Specification for Mobile RFID Interrogators," ISO/IEC 29143, 2011.
2 D.M. Dobkin, The RF in RFID, Elsevier Inc., 2008.
3 Y. Tanaka and I. Sasase, "Interference Avoidance Algorithms for Passive RFID Systems Using Contention-Based Transmit Abortion," IEICE Trans. Commun., vol. E90-B, no. 11, Nov. 2007, pp. 3170-3180.   DOI   ScienceOn
4 W. Choi et al., "RFID Tag Antenna Coupled by Shorted Microstrip Line for Metallic Surfaces," ETRI J., vol. 30, no. 4, Aug. 2008, pp. 597-599.   DOI   ScienceOn
5 I. Mayordomo et al., "Design and Implementation of a Long- Range RFID Reader for Passive Transponders," IEEE Trans. Microw. Theory Tech. vol. 57, no. 5, May 2009, pp. 1283-1290.   DOI
6 H.-W. Son, J.-N. Lee, and G.-Y. Choi, "Design of Compact RFID Reader Antenna with High Transmit/Receive Isolation," Microw. Optical Technol. Lett., vol. 48, no. 12, Dec., 2006, pp. 2478-2481.   DOI   ScienceOn
7 S. Chiu et al., "A 900 MHz UHF RFID Reader Transceiver IC," IEEE J. Solid-State Circuits, vol. 42, Dec. 2007, pp. 2822-2833.   DOI
8 A. Safarian et al., "An Integrated RFID Reader," IEEE Int. Solid- State Circuits Conf., 2007, pp. 218-219.
9 S.-C. Jung, M.-S. Kim, and Y. Yang, "A Reconfigurable Carrier Leakage Canceler for UHF RFID Reader Front-Ends," IEEE Trans. Circuits Syst., vol. 58, no. 1, Jan. 2011, pp. 70-76.   DOI
10 Radio-Frequency Identification Protocols Class-1 Generation-2 UHF RFID Protocol for Communications at 860-960 MHz, Version 1.2.0, 2007.
11 J.G. Proakis, M. Salehi, and G. Bauch, Contemporary Communication Systems Using MATALB & Simulink, 2nd ed., Thomson-Brooks/Cole, 2004.