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	An estimation of resonant frequency of a curving RFID Tag
	Xu, Lei ; Huang, Huiming ; Huang HM(黄辉明)
	2011
关键词	Cryptography Frequency estimation Inductance Manufacture Metal drawing Natural frequencies Radio frequency identification (RFID) Radio navigation
英文摘要	Conference Name:2011 International Conference on Advanced Design and Manufacturing Engineering, ADME 2011. Conference Address: Guangzhou, China. Time:September 16, 2011 - September 18, 2011.; Guangdong University of Technology; Huazhong University of Science and Technology; Hong Kong University of Science and Technology; Hong Kong Polytechnic University; University of Nottingham; Radio frequency identification (RFID) technology may be applied to cylindrical objects, but the curving of an RFID tag brings on an increase in resonant frequency of the tag antenna. The tag can not function in an excessively curving case, since the deviation of the antenna resonant frequency from working frequency makes a reduction in inductive energy supplied by a transmitter. The variation in antenna resonant frequency is dependant upon column radius of the cylinder and curving angle of the tag. Analytically, it is found that a reduction in central distance, which is determined by column radius and curving angle, between compound straight tracks leads to the decreasing of overall antenna-coil inductance after the curving of the tag. By introducing a curving turn exponent, the overall antenna-coil inductance is calculated. After neglecting the less variation in overall tag capacitance, the antenna resonant frequency may be estimated. The result provides an instruction for designing a curving tag antenna to fit the tag antenna resonant frequency for working frequency of an RFID system. ? (2011) Trans Tech Publications.
语种	英语
出处	http://dx.doi.org/10.4028/www.scientific.net/AMR.314-316.1325
出版者	Trans Tech Publications
内容类型	其他
源URL	[http://dspace.xmu.edu.cn/handle/2288/86346]
专题	物理技术－会议论文
推荐引用方式 GB/T 7714	Xu, Lei,Huang, Huiming,Huang HM. An estimation of resonant frequency of a curving RFID Tag. 2011-01-01.

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