一种双偶极子RFID标签天线设计  

A Dual-dipole RFID Tag Antenna Design

作　　者：李荣强[1] 杜国宏[1] 唐军[1] 唐涛[1] 

机构地区：[1]成都信息工程学院电子工程学院,成都610225

出　　处：《微波学报》2013年第3期14-17,共4页Journal of Microwaves

基　　金：国家自然科学基金(61201095);四川省教育厅科研项目(13ZB0078);成都信息工程学院科研项目(KYTZ201212)

摘　　要：设计了一款由两个弯折的偶极子天线,一个矩形环馈构成的新型超高频(UHF)射频识别(RFID)标签天线,尺寸为76 mm×31.4 mm×0.508 mm。该天线具有宽带,高增益和良好的辐射性能。为了降低制造成本,天线被印制在一个没有地平面和短路探针的单层基片上。我们制作了相应的实物天线,实验结果表明提出的天线在915MHz谐振频率时带宽能覆盖全球超高频射频识别频段840-960 MHz(S11<-10 dB)。此外,我们对天线的输入阻抗和自由空间中的阅读距离进行了测试。仿真和测试结果表明所设计的天线满足RFID标签应用要求。A novel tag antenna with two bent meandered strip dipoles and a rectangular-loop feed is designed in ultra high frequency （UHF） radio frequency identification （RFID） band,and its size is 76 mm×31.4 mm×0. 508 mmo The pro-posed antenna can provide broadband, high gain and a good radiation pattern simultaneously. For low-cost fabrication, the antenna is printed on a single-layer substrate without ground plane and shorting pins. The proposed tag antenna has been fab- ricated, the measured results show that the proposed antenna with resonant frequency of 915 MHz can cover global UHF RFID band 840-960 MHz （S11 〈-10 dB）. In addition, we measured the input impedance of antenna and the readable range in free space. Both simulated and measured results show that the designed antenna is satisfied with RFID application.

关 键 词：射频识别(RFID) 超高频(UHF) 阻抗匹配 标签天线 

分 类 号：TN820[电子电信—信息与通信工程] TP391.44[自动化与计算机技术—计算机应用技术]