[1]张海勇,黄 承,葛晋群,等.特高频反向电流对结构参数分析与设计[J].南京师范大学学报(工程技术版),2018,18(01):024.[doi:10.3969/j.issn.1672-1292.2018.01.003]
　Zhang Haiyong,Huang Cheng,Ge Jinqun,et al.Analysis and Design on Structure Parameters ofUHF Oppositely Directed Currents[J].Journal of Nanjing Normal University(Engineering and Technology),2018,18(01):024.[doi:10.3969/j.issn.1672-1292.2018.01.003]
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特高频反向电流对结构参数分析与设计
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南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
18卷
期数:
2018年01期
页码:
024
栏目:
电气与电子工程
出版日期:
2018-03-31

文章信息/Info

Title:
Analysis and Design on Structure Parameters ofUHF Oppositely Directed Currents
文章编号:
1672-1292(2018)01-0024-06
作者:
张海勇1; 2; 黄 承3; 葛晋群1; 2; 唐万春1; 2; 4; 王 毅5
(1.南京师范大学物理科学与技术学院,江苏 南京 210023)(2.南京师范大学江苏省光电技术重点实验室,江苏 南京 210023)(3.南京理工大学电光学院,江苏 南京 210094)(4.江苏省地理信息资源开发与利用协同创新中心,江苏 南京 210023)(5.南京航空航天大学雷达成像与微波光子学教育部重点实验室,江苏 南京 211106)
Author(s):
Zhang Haiyong1; 2; Huang Cheng3; Ge Jinqun1; 2; Tang Wanchun1; 2; 4; Wang Yi5
(1.School of Physics Science and Technology,Nanjing Normal University,Nanjing 210023,China)(2.Jiangsu Key Laboratory on Opto-electronics Technology,Nanjing Normal University,Nanjing 210023,China)(3.School of Electronic and Optical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)(4.Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application,Nanjing 210023,China)(5.Key Laboratory of Radar Imaging and Microwave Photonics of Ministry of Education,Nanjing University ofAeronautics and Astronauts,Nanjing 211106,China)
关键词:
射频识别; 特高频; 反向电流对; 阅读器天线; 近场
Keywords:
RFID; UHF; ODCs; reader antenna; near-field
分类号:
TN911
DOI:
10.3969/j.issn.1672-1292.2018.01.003
文献标志码:
A
摘要:
对基于反向电流对(oppositely directed currents,ODCs)技术的特高频(ultra-high frequency,UHF)近场(near field)射频识别(radio frequency identification,RFID)阅读器天线的结构参数对两单元上电流分布的影响进行了深入的研究. 天线的激励单元长度与工作频率给定时,寄生单元长度和两单元间距决定了天线两单元上电流相位差. 当寄生单元的长度与两单元间距之间达到某一对应关系时,两单元上形成反向电流. 在进行反向电流对设计时,天线的结构参数影响天线周围磁场分布,可根据实际所需要的磁场及识别区域的大小,灵活选择寄生单元的长度及其对应的单元间距. 当两单元间距较小时,寄生单元长度取λ/2为宜; 当两单元间距较大时,寄生单元长度的取值范围也较大. 最终给出两组设计实例验证了该设计方法的合理性.
Abstract:
In this paper,based on the oppositely directed currents(ODCs),a near field Radio Frequency Identification(RFID)reader antenna at ultra-high frequency(UHF)band is introduced. How structure parameters of antenna affects current distribution along the two elements are studied further. Once the length of the excited element and the operating frequency is given,the phase difference of currents along the two elements is determined by the length of parasitic element and the pitch between the two elements. To realize the ODCs,the length of the parasitic element and the distance between two elements should satisfy a corresponding relationship. With different requirements of the magnetic field distribution and the recognization areas,the length of the parasitic element with corresponding distance between two elements can be chosen flexibly. When the distance between the two elements is small,the length of parasitic element close to λ/2 is suitable. While when the distance is large,the length of parasitic element can be chosen among a large range. Finally,two examples are given to prove that the method introduced in this paper is reasonable.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2018-02-28.
基金项目:国家自然基金(61571232)、中央高校基本科研业务费专项资助项目(NJ20150019).
通讯联系人:唐万春,教授,博士生导师,研究方向:射频电路与系统、电磁场数值计算等. E-mail:eewctang@njnu.edu.cn
更新日期/Last Update: 1900-01-01