基于UHF频段及微波段分型天线研究

摘要

针对工作在UHF频段和微波频段的RFID系统(射频识别系统)要求,设计满足915MHz和2.45GHz多频特性的分型天线,提出采用方形Sierpinski毯结构.针对目前分型天线谐振频率所成的1:3:9的特性分析,并对天线部分参数改变,并对二阶毯型贴片天线进行开槽分析研究,提高天线性能,对高频部分降频以达到系统所要求915MH和2.45GHz的中心频率,达到谐振频率的同时并保证理想的10dB回损带宽.%According to work in UHF band and microwave band of radio frequency identification ( RFID system) requirements, the design system meets with 915MHz and 2. 45GHz frequency characteristics,this paper puts forward the points antennas by square Sierpinski blanket structure. Aiming at the resonant frequency of antenna l∶3∶9 which is analyzed, change the characteristics of antenna parameters and second patch antennas for creep type analy8is and study of the slot antenna to improve performance, high frequency reduction required to achieve system 915MHz and 2. 45GHz respectively, the center frequency resonance frequency and the ideal and ensures lOdB loss bandwidth.