摘要
针对超高频抗金属射频识别(RFID)标签的小型化和低剖面需求,提出了一种可用于金属表面的超高频RFID标签天线,其尺寸为50 mm×20 mm×0.9 mm。该设计采用CST MWS软件进行建模仿真,分析了嵌入式馈电结构尺寸变化和矩形开槽尺寸变化对标签天线输入阻抗的影响,并调整相应参数以达到标签天线输入阻抗与芯片阻抗的共轭匹配。实测结果表明,标签天线输入阻抗与芯片阻抗匹配良好,在910 MHz处有最大实测阅读距离为4.3 m,且具有小尺寸和低剖面,可应用于物流、医疗、零售等多种领域的金属场景。
Aiming at the requirements of miniaturization and low profile of UHF RFID metal-mountable tag,this paper proposes a metal-mountable UHF RFID tag antenna with a size of 50 mm×20 mm×0.9 mm.The design uses CST MWS software for modeling and simulation.The effects of the changes of the size of the inset-feed structure and the size of the rectangular slot on the input impedance of the tag antenna are analyzed,and the corresponding parameters are adjusted to realize conjugate impedance matching between tag antenna and microchip.The measured results show that the input impedance of the tag antenna and the chip impedance are well matched.The tag antenna has a maximum measured read range of 4.3 m at 910 MHz,and has a small size and low profile.It can be applied to metal scenes in various fields such as logistics,medical treatment and retail.
作者
唐旭阳
张博涵
张经纬
何大平
吴志鹏
刘成国
TANG Xuyang;ZHANG Bohan;ZHANG Jingwei;HE Daping;WU Zhipeng;LIU Chengguo(School of Science, Wuhan University of Technology, Wuhan 430070, China;School of Information Engineering, Wuhan University of Technology, Wuhan 430070, China;Hubei Engineering Research Center of RF-Microwave Technology and Application, Wuhan 430070, China)
出处
《压电与声光》
CAS
北大核心
2020年第3期418-422,共5页
Piezoelectrics & Acoustooptics
基金
自然科学基金国际合作重大基金资助项目(6132010600)
湖北省技术创新项目重大专项基金资助项目(2016AAA007)。
