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The reading region of ultra high frequency radio-frequency identification (UHF RFID) system is affected by polarization mismatch, reader antenna height, coherent interference and so on. Based on the principles of RFID technology and ray-tracing method, a complete propagation model in real environments is derived. Utilizing recognition rate of target region (RRTR), a method of evalualing the performances of a system is presented. In order to obtain the maximization of RRTR, two solutions including tag diversity and phase switch are proposed, which combines the theories of electromagnetic propagation and coherent interference suppression. The values of RRTR under different parameters are measured in outdoor and indoor environments with a commodity hardware. The measurement results show that the values of RRTR can be enhanced by 10% and 7.6% with the two solutions respectively.
[1] Marrocco G 2011 Proc. IEEE Trans. Antennas Propag. 59 1019
[2] Griffin J D, Durgin G D 2009 Proc. IEEE Trans. Antennas Propag. 51 11
[3] Hou Z G, He Y G, Li B, She K, Zhu Y Q 2010 Acta Phys. Sin. 59 5606 (in Chinese) [侯周国, 何怡刚, 李兵, 佘开, 朱彦卿 2010 物理学报 59 5606]
[4] Tang Z J, He Y G 2009 Acta Phys. Sin. 58 5126 (in Chinese) [唐志军, 何怡刚 2009 物理学报 58 5126]
[5] Li B, He Y G, Hou Z G, She K, Zuo L 2011 Acta Phys. Sin. 60 084202 (in Chinese) [李兵, 何怡刚, 侯周国, 佘开, 佐磊 2011 物理学报 60 084202]
[6] Marrocco G, Di Giampaolo E, Aliberti R 2009 Proc. IEEE Trans. Antennas Propag. 51 44
[7] Abbak M, Tekin I 2009 Proc. IEEE Trans. Antennas Propag. 51 185
[8] Feuerstein M J, Blackard K L, Rappaport T S, Seidel S Y, Xia H H 1994 IEEE Trans. Vehicular Technol. 43 487
[9] Nikitin P V, Rao K V S, Martinez R, Lam S F 2009 IEEE Trans. Microwave Theory Technol. 57 1297
[10] Nikitin P V, Rao K V S 2008 IEEE International Conference on RFID Las Vegas, USA, April 16-18, 2008, p277
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[1] Marrocco G 2011 Proc. IEEE Trans. Antennas Propag. 59 1019
[2] Griffin J D, Durgin G D 2009 Proc. IEEE Trans. Antennas Propag. 51 11
[3] Hou Z G, He Y G, Li B, She K, Zhu Y Q 2010 Acta Phys. Sin. 59 5606 (in Chinese) [侯周国, 何怡刚, 李兵, 佘开, 朱彦卿 2010 物理学报 59 5606]
[4] Tang Z J, He Y G 2009 Acta Phys. Sin. 58 5126 (in Chinese) [唐志军, 何怡刚 2009 物理学报 58 5126]
[5] Li B, He Y G, Hou Z G, She K, Zuo L 2011 Acta Phys. Sin. 60 084202 (in Chinese) [李兵, 何怡刚, 侯周国, 佘开, 佐磊 2011 物理学报 60 084202]
[6] Marrocco G, Di Giampaolo E, Aliberti R 2009 Proc. IEEE Trans. Antennas Propag. 51 44
[7] Abbak M, Tekin I 2009 Proc. IEEE Trans. Antennas Propag. 51 185
[8] Feuerstein M J, Blackard K L, Rappaport T S, Seidel S Y, Xia H H 1994 IEEE Trans. Vehicular Technol. 43 487
[9] Nikitin P V, Rao K V S, Martinez R, Lam S F 2009 IEEE Trans. Microwave Theory Technol. 57 1297
[10] Nikitin P V, Rao K V S 2008 IEEE International Conference on RFID Las Vegas, USA, April 16-18, 2008, p277
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