UHF频段金属型标签天线的研究与设计

随着天线技术的发展,时UHF RFID可用于金属物体的标签天线的研究成为了热点和难点.根据当前标签天线的设计特点和设计原则,设计出一种适用于845～960MHz的宽频带可用于金属物体的新型标签天线,并通过仿真分析与计算确定了天线的一些重要参量,实现了标签天线输入阻抗能在较大范围内与更多阻抗不同的标签芯片进行匹配.实测结果与仿真结果基本一致,抗金属性能稳定,天线尺寸较小,通信距离较远.

Research and design of UHF RFID metallic tag antenna

With the development of antenna technology,the studies of UHF RFID tag antenna can be used for metallic objects have become hot and difficult problems.According to the design features and design principles of the tag antenna,the dissertation is devoted to design a new type and suitable for 845～960MHz broadband tag antennas for metallic objects,the specific parameters of the antenna are analyzed and determined through simulation analysis and calculation.It is realized the input impedance of tag antenna can match with other types of tag chips which have different impedances in a larger scope.Measured results is basically consistent with simulation results are the performance of anti-metal is stable,the size of the antenna is smaller,the communication distance of the antenna is farther.