穿戴式射频识别读卡器天线的研究
发布时间：2018-11-09 11:23
【摘要】：随着现代社会通信技术的不断发展,电子信息产品的设备形态和功能应用的不断演化,以人体为中心的无线通信系统以及物联网技术成为当前以及未来一段时间信息通信技术的热点。因此,研制一种新型穿戴式射频识别读卡器天线具有重要的实际意义。与一般的射频识别天线不同,穿戴式射频识别天线既要在水平方向能够读取近距离环境中的标签,又能在垂直方向上通过导航或定位系统跟远方控制中心实现通信连接。论文先用V形开口环与水平振子实现圆极化性能,然后再与平面磁偶极子天线进行组合,使天线在天顶方向具有圆极化辐射特性,方位面具有足够的增益和较宽的波束,从而能够同时满足穿戴式射频识别和通信的功能。论文的主要工作如下:1.首先从基本振子理论出发,建立天线的等效源模型,提出同时实现较宽方位面波束、水平覆盖增益和特定方向上圆极化特性的基本原理。2.在上述理论研究的基础上,设计了一种V形开口环和水平振子组合天线,并通过引入谐振腔(即平面磁偶极子)使天线在方位面波束得到展宽。利用电磁仿真软件IE3D建立模型与优化,对该天线的反射系数、轴比、辐射方向图和增益效率等参数进行了研究分析,验证了该组合天线既具有一定的定向性,又有一定宽波束。最后根据软件中的模型制造出实物,通过对比实物测量和仿真结果,验证其可行性。3.在上述天线模型的基础上,使用电磁仿真软件CST建立人体模型,将天线和人体模型一起仿真,同样对该天线的反射系数、轴比等参数进行分析,最后通过实物测量验证该天线的可穿戴性能。
[Abstract]:With the development of communication technology in modern society, the application of equipment and function of electronic information products is evolving. The wireless communication system centered on human body and the Internet of things technology have become the focus of information and communication technology at present and in the future. Therefore, the development of a new wearable RFID card reader antenna has important practical significance. Unlike conventional RFID antennas, wearable RFID antennas can not only read tags in close range in horizontal direction, but also communicate with remote control center in vertical direction through navigation or positioning system. In this paper, the circular polarization is realized by using V-shaped open loop and horizontal dipole, and then combined with planar magnetic dipole antenna to make the antenna have circular polarization radiation in the zenith direction, and the azimuth mask has enough gain and wide beam. Thus, the wearable radio frequency identification and communication functions can be satisfied at the same time. The main work of this paper is as follows: 1. Based on the basic oscillator theory, the equivalent source model of the antenna is established, and the basic principle of simultaneously realizing the broad azimuth plane beam, the horizontal coverage gain and the circular polarization characteristics in a specific direction is presented. 2. On the basis of the above theoretical research, a V-shaped open loop and horizontal dipole combined antenna is designed, and the antenna beam in azimuth plane is broadened by the introduction of a resonant cavity (i.e. planar magnetic dipole). The electromagnetic simulation software IE3D is used to model and optimize the antenna. The reflection coefficient, axial ratio, radiation pattern and gain efficiency of the antenna are studied and analyzed. The results show that the combined antenna has both directional and wide beam. Finally, according to the model in the software, the physical object is manufactured, and the feasibility is verified by comparing the physical measurement with the simulation results. On the basis of the above antenna model, the human body model is established by using electromagnetic simulation software CST, and the antenna and human body model are simulated together. The reflection coefficient and axial ratio of the antenna are also analyzed. Finally, the wearability of the antenna is verified by physical measurement.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN828
本文编号：2320264
[Abstract]:With the development of communication technology in modern society, the application of equipment and function of electronic information products is evolving. The wireless communication system centered on human body and the Internet of things technology have become the focus of information and communication technology at present and in the future. Therefore, the development of a new wearable RFID card reader antenna has important practical significance. Unlike conventional RFID antennas, wearable RFID antennas can not only read tags in close range in horizontal direction, but also communicate with remote control center in vertical direction through navigation or positioning system. In this paper, the circular polarization is realized by using V-shaped open loop and horizontal dipole, and then combined with planar magnetic dipole antenna to make the antenna have circular polarization radiation in the zenith direction, and the azimuth mask has enough gain and wide beam. Thus, the wearable radio frequency identification and communication functions can be satisfied at the same time. The main work of this paper is as follows: 1. Based on the basic oscillator theory, the equivalent source model of the antenna is established, and the basic principle of simultaneously realizing the broad azimuth plane beam, the horizontal coverage gain and the circular polarization characteristics in a specific direction is presented. 2. On the basis of the above theoretical research, a V-shaped open loop and horizontal dipole combined antenna is designed, and the antenna beam in azimuth plane is broadened by the introduction of a resonant cavity (i.e. planar magnetic dipole). The electromagnetic simulation software IE3D is used to model and optimize the antenna. The reflection coefficient, axial ratio, radiation pattern and gain efficiency of the antenna are studied and analyzed. The results show that the combined antenna has both directional and wide beam. Finally, according to the model in the software, the physical object is manufactured, and the feasibility is verified by comparing the physical measurement with the simulation results. On the basis of the above antenna model, the human body model is established by using electromagnetic simulation software CST, and the antenna and human body model are simulated together. The reflection coefficient and axial ratio of the antenna are also analyzed. Finally, the wearability of the antenna is verified by physical measurement.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN828
【参考文献】
相关博士学位论文 前1条
1 安文星;新型宽带电磁偶极子微带天线的研究[D];北京邮电大学;2012年
相关硕士学位论文 前1条
1 张庆年;非对称结构穿戴式振子天线的研究与设计[D];南京邮电大学;2016年
，本文编号：2320264
本文链接：https://www.wllwen.com/kejilunwen/xinxigongchenglunwen/2320264.html
