基于传输线电磁泄漏的UHF RFID阅读器近场天线的研究与设计

发布时间：2018-03-04 02:31

本文选题：UHF　切入点：RFID　出处：《南京航空航天大学》2014年硕士论文　论文类型：学位论文

【摘要】：射频识别技术(Radio Frequency Identification,RFID)作为一种非接触式自动识别技术,能够快速,准确,实时采集信息,近年来在物流,交通,零售等行业得到了广泛的应用。RFID技术要实现数据信息的传递交换,在实际应用中不可避免的应用到天线产品和天线理论。在当今越来越多的RFID使用场合,比如档案馆柜架管理,贵金属零售监控,服装零售行业等等,如何在近距离阅读的情况下,保证天线的稳定性,不误读,不漏读,不相互串读等优良性质,是近场RFID阅读器近场天线的一项新兴课题。由于此种需求,本文基于电磁波传输线——微带线在传输过程中泄露的电磁波,通过Ansoft HFSS软件仿真、性能优化、实物加工、并与UHF RFID阅读器及各种标签组成的系统联调等步骤,设计了一系列适用于UHF(Ultra High Frequency)频段的RFID阅读器天线。本文首先设计了一款应用于档案柜柜架管理的近场天线,用于实时监测柜架上的标签;另一款为近场手持机天线,用于完成手动寻架功能。本文给出了此两款天线的仿真与测试数据,并通过模拟实际应用环境,联调RFID系统测试天线,结果显示其均满足了不同场合的要求。本文所设计的两款天线的特点是,设计思路简单,拥有相对稳定的目标距离和近场均匀性,并能够根据实际情况巧妙地变化。本文通过对近场UHF RFID近场阅读器天线的研究,给与了天线的设计步骤,附有优化方法和优化数据,并在实物加工之后,基于不同的测试环境,给出了详尽的测试报告。
[Abstract]:Radio Frequency Identification (RFID), as a non-contact automatic identification technology, can collect information quickly, accurately and in real time. Retail and other industries have been widely used. RFID technology to achieve the transfer of data information exchange, in practical applications inevitably applied to antenna products and antenna theory. In today's more and more RFID use occasions, such as archives cabinet management, Precious metal retail monitoring, clothing retail industry, etc., how to ensure the stability of antenna, no misreading, no missing reading, no cross-reading and other excellent properties under the condition of close reading, It is a new subject of near field antenna for near field RFID reader. Because of this demand, this paper is based on electromagnetic wave leaked in the transmission process of electromagnetic wave transmission line-microstrip line, through Ansoft HFSS software simulation, performance optimization, material processing, A series of RFID reader antennas suitable for UHF(Ultra High frequency band are designed, which are combined with UHF RFID reader and various tags. In this paper, a near field antenna is designed for archives cabinet frame management. It is used to monitor the label on the cabinet in real time, the other is the near field handset antenna, which is used to complete the manual tracking function. In this paper, the simulation and test data of the two antennas are given, and the antenna is tested in the RFID system by simulating the practical application environment. The results show that they all meet the requirements of different occasions. The characteristics of the two antennas designed in this paper are simple design idea, relatively stable target distance and near field uniformity. Through the research of near-field UHF RFID near-field reader antenna, this paper gives the design steps of the antenna, with the optimization method and data, and after the physical processing, based on different test environment, A detailed test report is given.
【学位授予单位】：南京航空航天大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP391.44;TN820

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