现代电子技术2018，Vol.41Issue(9)：17-20,4.DOI:10.16652/j.issn.1004-373x.2018.09.004
超高频RFID系统的宽带圆极化微带天线优化设计
Optimization design of broadband circularly?polarized microstrip antenna for UHF RFID system
摘要
Abstract
An optimization design method of circularly?polarized antenna is presented for the globally?universal ultrahigh fre?quency(UHF)RFID reader?writer terminal. On the basis of the traditional broadband stacked microstrip antenna,the axial ra?tio bandwidth of the antenna is broadened by loading the center short circuit column,and improving the T?type dual?feed power?dividing and phase?shifting network. The impedance bandwidth of the antenna is further broadened by means of the matching tuning stub. The design thought of the antenna is given,and its electromagnetic simulation optimization is performed. The fabri?cating test was carried out for the antenna. The test results show that,within 840~960 MHz frequency band,the antenna standing wave ratio is less than 1.5,its axial ratio is less than 3 dB,and the gain can reach up to 9 dB. The designed antenna has been successfully applied in the ultrahigh frequency four?channel reader?writer terminal.关键词
射频识别/微带天线/超高频读写器/圆极化/轴比带宽/天线设计Key words
radio frequency identification/microstrip antenna/ultrahigh frequency reader⁃writer/circular polarization/axial ratio bandwidth/antenna design分类
信息技术与安全科学引用本文复制引用
傅世强,钟华华,李婵娟..超高频RFID系统的宽带圆极化微带天线优化设计[J].现代电子技术,2018,41(9):17-20,4.基金项目
国家自然科学基金(61401056) （61401056）
中央高校基本科研业务费专项资金资助(3132016320)Project Supported by National Natural Science Foundation of China(61401056),Fundamental Research Funds for the Central Universities(3132016320) （3132016320）
