RFID reader front-end having robust Tx leakage canceller for load variation

IEEE Transactions on Microwave Theory and Techniques

Volumn 57, Issue 5, 2009, Pages 1348-1355

  Lim, Won Gyu ^a   Park, Seo Young ^a   Son, Wang Ik ^a   Lee, Moon Que ^b   Yu, Jong Won ^a  

^a Korea Advanced Institute of Science and Technology (KAIST)   (South Korea)

^b University of Seoul   (South Korea)

Author keywords

Antenna isolation; Directional coupler; Load impedance variation; Ultra high frequency (UHF) RF identification (RFID)

Indexed keywords

ANTENNA ISOLATION; ANTENNA SYSTEM; COUPLER STRUCTURE; FRONT-END STRUCTURES; LOAD IMPEDANCE VARIATION; LOAD VARIATIONS; RF IDENTIFICATIONS; RFID READERS; TX LEAKAGE; ULTRA-HIGH; ULTRA-HIGH-FREQUENCY (UHF) RF IDENTIFICATION (RFID);

DIRECTIONAL COUPLERS;

ANTENNAS;

EID: 67649298064     PISSN: 00189480     EISSN: None     Source Type: Journal    
DOI: 10.1109/TMTT.2009.2017308     Document Type: Article

References (8)

1. K. Penttil, L. Sydnheimo, and M. Kivikoski, "Implementation of Tx/Rx isolation in an RFID reader," Int. J. Radio Freq. Identification Technol. Appl., vol. 1, no. 1, pp. 74-79, 2006.
2. S. L. Karode and V. F. Fusco, "Feedforward embedding circulator enhancement in transmit/receive applications," IEEE Microw. Wireless Compon. Lett., vol. 8, no. 1, pp. 33-34, Jan. 1998.
3. J. H. Jung, J. H. Kim, S. M. Kim, and K. C. Lee, "New circulator structure with high isolation for time division duplexing radio system," in IEEE Veh. Technol. Conf., Sep. 2005, vol. 4, pp. 2766-2769.
4. K. Choi, Y. Eo, S. Jung, I. Kwon, H.-B. Lee, and Y.-J. Kim, "A fully integrated CMOS RF transmitter for UHF mobile RFID reader applications," in Proc. 37th Eur. Microw. Conf., Oct. 2007, pp. 1648-1651.
5. W.-G. Lim and J.-W. Yu, "Balanced circulator structure with enhanced isolation characteristics," Microw. Opt. Technol. Lett., vol. 50, no. 9, pp. 2389-2391, Sep. 2008.
6. W. I. Son, W. G. Lim, M. Q. Lee, S. B. Min, and J. W. Yu, "Printed square quadrifilar spiral antenna for UHF RFID reader," in IEEE AP-S Int. Symp., Jun. 10-15, 2007, pp. 305-308.
7. J. S. Colburn and Y. Rahmat-Samii, "Quadrifilar-curl antenna for the "Big-LEO" mobile satellite service system," in IEEE AP-S Int. Symp. , Baltimore, MD, 1996.
8. D. Pozar, Microwave Engineering, 3rd ed. New York: Wiley, 2005.