约束条件下13.56MHz RFID读写器天线的设计

发布时间：2018-04-04 10:48

本文选题：13.56MHZ　切入点：RFID　出处：《福建师范大学》2015年硕士论文

【摘要】：近年来,天线作为RFID (Radio Frequency Identification)系统的重要组成部件,在其中发挥着关键的作用。天线作为射频识别系统的空中接口,是阅读器与应答器之间信息传输的桥梁,因此对RFID读写器天线的探究具有现实意义。RFID技术具有安全性能高、信息存储量大等特点,被视为条形码最有潜力的替代品。物联网的发展更是推动了RFID技术的前进。因此RFID天线成为各大高校及企业的研究热点。由于实际环境的制约,天线小型化一直都是研究人员所关注的重点。而且迅猛发展的无线通信对天线的小型化提出了越来越高的要求。本论文主要研究在约束条件下对13.56MHz RFID读写器天线的仿真和设计,对小型化读写器天线的高识别距离的优化进行了探究。分别研究在面积和周长限定的情况下,不同的设计参数对天线线圈性能的影响,并通过三维电磁仿真软件HFSS和MATLAB软件的数字图像处理功能来对比天线的磁场强度标量图,进而判断天线性能的优劣。研究工作旨在找出在面积或周长限定条件下,具有较好性能的天线线圈设计参数。本文使用HFSS软件做了大量的仿真研究,优选设计方案并实际制作天线进行验证,实际测量情况与仿真结果相吻合,验证了仿真设计的准确性。研究结果对RFID读写器天线的设计和生产具有一定的参考价值。
[Abstract]:In recent years, as an important component of RFID Radio Frequency Identification system, antenna plays a key role in it.As the air interface of RFID system, antenna is the bridge of information transmission between reader and transponder. Therefore, it is of practical significance to explore the antenna of RFID reader.It is regarded as the most potential substitute for bar code.The development of the Internet of things is to promote the progress of RFID technology.Therefore, RFID antenna has become a research hotspot in universities and enterprises.Antenna miniaturization has always been the focus of researchers due to the constraints of the actual environment.Moreover, the rapid development of wireless communication has put forward higher and higher requirements for antenna miniaturization.This paper mainly studies the simulation and design of 13.56MHz RFID reader antenna under the constraint conditions, and probes into the optimization of the high recognition distance of the miniaturized reader antenna.The effect of different design parameters on the performance of antenna coil is studied in the case of limited area and perimeter, and the magnetic field intensity scalar diagram of antenna is compared by the digital image processing function of 3D electromagnetic simulation software HFSS and MATLAB software.Then the antenna performance is judged.The purpose of this study is to find out the design parameters of antenna coil with better performance under the condition of limited area or circumference.In this paper, a large number of simulation studies have been done by using HFSS software, and the optimal design scheme has been selected and the antenna has been made for verification. The actual measurement results are in agreement with the simulation results, and the accuracy of the simulation design is verified.The research results have some reference value for the design and production of RFID reader antenna.
【学位授予单位】：福建师范大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TP391.44;TN820

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