电子器件2018，Vol.41Issue(1)：36-40,5.DOI:10.3969/j.issn.1005-9490.2018.01.007
一种新型圆极化UHF通用型RFID读写器天线
Novel Circularly Polarized Antenna for Universal UHF RFID Reader
摘要
Abstract
In view of the application requirements for universal UHF RFID reader antenna,a novel circular polarization(CP)design of broadband reader antenna for universal UHF(840 MHz~960 MHz)RFID applications is proposed. Antenna with planar slot patch structure to coplanar waveguide(CPW)feed achieves wide-band circular polarization characteristics. The measured 10 dB impedance bandwidth is 735 MHz~1 014 MHz,and the fractional bandwidth is 31.9%,S11<-20 dB within 840 MHz~960 MHz,the measured 3 dB axial ratio bandwidth is 838 MHz~1 134 MHz,and the fractional bandwidth is 30.0%,the operating band has a flat gain greater than 3.5 dBi.The simu-lation results are in good agreement with the measure results and the antenna structure is simple,easy to process,to meet the universal UHF RFID reader antenna application requirements.关键词
射频识别(RFID)读写器天线/通用超高频(UHF)频段/共面波导(CPW)/宽带/圆极化Key words
radio frequency identification(RFID)reader antenna/universal ultrahigh frequency(UHF)band/coplanar waveguide(CPW)/broadband/circular polarization(CP)分类
信息技术与安全科学引用本文复制引用
郝宏刚,陈海雷,叶洪钢..一种新型圆极化UHF通用型RFID读写器天线[J].电子器件,2018,41(1):36-40,5.基金项目
重庆市科委基础科学与前沿技术研究项目(cstc2017jcyjAX0193) （cstc2017jcyjAX0193）
