无源超高频射频识别系统路径损耗研究

佐磊; 何怡刚; 李兵; 朱彦卿; 方葛丰

doi:10.7498/aps.62.144101

摘要

基于射频识别技术原理及Friis传输方程, 导出了自由空间下无源超高频射频识别(RFID) 系统路径损耗表达式. 结合菲涅耳区理论, 分析了菲涅耳余隙及阅读器天线至标签间距两因变量条件下第一菲涅耳区受阻隔对RFID系统路径损耗的影响, 并提出了双斜率对数距离路径损耗模型. 在开阔室内环境下, 测试了菲涅耳余隙及阅读器天线至标签间距变化时的系统路径损耗. 测试结果表明: 菲涅耳余隙大于第一菲涅耳区半径1.5倍时, 刃形障碍物对系统路径损耗影响较小; 相比传统对数距离路径损耗模型, 双斜率模型标准差减小10%.

关键词:

Abstract

Based on the principles of radio-frequency identification (RFID) technology and Friis propagation equation, the path loss expression of ultra high frequency (UHF) RFID in free space is provided. The Fresnel clearance and horizontal interval between reader antenna and tag are employed as dependent variables, and then the obstructing effect of the first Fresnel zone on path loss is discussed. By the methods of linear regression and minimum mean-square error, a dual-slope Logarithm distance path losses model is proposed. The path losses of UHF RFID under different parameters are measured in open indoor environment. The measurement results indicate that RFID system experiences less fading when the Fresnel clearance is 1.5 times higher than the first Fresnel radius. The standard deviation of the proposed model with two slopes reduces ten percent or more compared with that of traditional logarithm distance path loss model.

Keywords:

作者及机构信息

1.
合肥工业大学电气与自动化工程学院, 合肥 230009;

2.
湖南大学电气与信息工程学院, 长沙 410082;

3.
电子测试技术国防科技重点实验室, 青岛 266555

基金项目: 国家杰出青年基金(批准号: 50925727);国家自然科学基金(批准号: 60876022);国家自然科学基金青年科学基金(批准号: 51107034);国防预研重大项目(批准号: C1120110004)和湖南省教育厅科学研究项目(批准号: 11C0479)资助的课题.

Authors and contacts

1.
School of Electrical and Automation Engineering, Hefei University of Technology, Hefei 230009, China;

2.
College of Electrical and Information Engineering, Hunan University, Changsha 410082, China;

3.
National Key Laboratory of National Defense Science and Technology on Electronic Test and Measurement, Qingdao 266555, China

Funds: Project supported by the National Natural Science Foundation for Distinguished Young Scholars of China (Grant No. 50925727), the National Natural Science Foundation of China (Grant No. 60876022), the Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 51107034), the National Defense Advanced Research Project, China (Grant No. C1120110004), and the Research Foundation of Education Bureau of Hunan Province, China (Grant No. 11C0479).

参考文献

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[2]	Li B, He Y G, Hou Z G, She K, Zuo L 2011 Acta Phys. Sin. 60 4202 (in Chinese) [李兵, 何怡刚, 侯周国, 佘开, 佐磊 2011 60 4202]
[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 59 5606]
[4]	Nikitin P V, Rao K 2009 IEEE International Conference on RFID Orlando FL, USA, April 27-28, 2008 p117
[5]	S kai, He Y G, Zuo L, Fang G F 2011 IEEE International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Weihai, China, July 6-9, 2011 p1441
[6]	Karthaus U, Fischer M 2003 IEEE J. Solid-State Circuits 38 1602
[7]	Lazaro A, Girbau D, Salinas D 2009 Proc. IEEE Trans. Antennas Propag. 57 1241
[8]	Wang H G, Pei C X, Pan Q 2009 IEEE International Conference on Wireless Communications, Networking and Mobile Computing Beijing, China, Sept. 24-26, 2009 p1
[9]	Nikitin P V, Rao K V S 2009 IEEE Trans. Ind. Electron. 56 2374
[10]	Lee W C Y 1998 Mobile Communication Engineering: Theory and Applications (2nd Ed.) (New York: McGraw-Hill) pp140-143
[11]	Goldsmith A (Translated by Yang H W, Li W D, Guo W B) 2007 Wireless Communications (Beijing: Posts and Telecom Press) pp33-35 (in Chinese) [哥德史密斯著 (杨鸿文, 李卫东, 郭文彬译) 2007 无线通信(北京: 人民邮电出版社)第33–35页]
[12]	Feuerstein M J, Blackard K L, Rappaport T S, Seidel S Y, Xia H H 1994 IEEE Trans. Vehicular Technol. 43 487
[13]	Xia H H, Bertoni H L, Maciel L R, Stewart A L, Rowe R 1993 Proc. IEEE Trans. Antennas Propag. 41 1439

施引文献

[1]	Ruiz A R J, Granja F S, Honorato J C P, Rosas J G 2012 Proc. IEEE Trans. Instrum. Meas. 61 178
[2]	Li B, He Y G, Hou Z G, She K, Zuo L 2011 Acta Phys. Sin. 60 4202 (in Chinese) [李兵, 何怡刚, 侯周国, 佘开, 佐磊 2011 60 4202]
[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 59 5606]
[4]	Nikitin P V, Rao K 2009 IEEE International Conference on RFID Orlando FL, USA, April 27-28, 2008 p117
[5]	S kai, He Y G, Zuo L, Fang G F 2011 IEEE International Conference on Electric Utility Deregulation and Restructuring and Power Technologies Weihai, China, July 6-9, 2011 p1441
[6]	Karthaus U, Fischer M 2003 IEEE J. Solid-State Circuits 38 1602
[7]	Lazaro A, Girbau D, Salinas D 2009 Proc. IEEE Trans. Antennas Propag. 57 1241
[8]	Wang H G, Pei C X, Pan Q 2009 IEEE International Conference on Wireless Communications, Networking and Mobile Computing Beijing, China, Sept. 24-26, 2009 p1
[9]	Nikitin P V, Rao K V S 2009 IEEE Trans. Ind. Electron. 56 2374
[10]	Lee W C Y 1998 Mobile Communication Engineering: Theory and Applications (2nd Ed.) (New York: McGraw-Hill) pp140-143
[11]	Goldsmith A (Translated by Yang H W, Li W D, Guo W B) 2007 Wireless Communications (Beijing: Posts and Telecom Press) pp33-35 (in Chinese) [哥德史密斯著 (杨鸿文, 李卫东, 郭文彬译) 2007 无线通信(北京: 人民邮电出版社)第33–35页]
[12]	Feuerstein M J, Blackard K L, Rappaport T S, Seidel S Y, Xia H H 1994 IEEE Trans. Vehicular Technol. 43 487
[13]	Xia H H, Bertoni H L, Maciel L R, Stewart A L, Rowe R 1993 Proc. IEEE Trans. Antennas Propag. 41 1439

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