频率和方向图可重构天线设计  

Design of frequency and radiation pattern reconfigurable antenna

作　　者：赵虎辰 唐涛 黄和平 张谢逊 Zhao Huchen;Tang Tao;Huang Heping;Zhang Xiexun(Department of Remote Control and Telemetry,The 54th Research Institute of China Electronics Technology Group Corporation,Shijiazhuang 050081,China;College of Electronic and Information,Southwest Minzu University,Chengdu 610225,China;Key Laboratory of Electronic and Information Engineering,State Ethnic Affairs Commission,Chengdu 610041,China)

机构地区：[1]中国电子科技集团公司第五十四研究所遥控遥测专业部,河北石家庄050081 [2]西南民族大学电子信息学院,四川成都610225 [3]国家民委电子信息工程重点实验室,四川成都610041

出　　处：《电子技术应用》2023年第9期21-25,共5页Application of Electronic Technique

基　　金：国家自然科学基金(62001402)。

摘　　要：提出了一种可重构频率和方向图的微带贴片天线设计方案,其由带倒“Ω”形缝隙地板和辐射单元构成。改变加载在地板缝隙中心处的二极管的工作状态,可重构天线的局部结构和表面电流分布,从而实现天线工作频率和辐射方向图的重构。从仿真和测试结果来看,该设计可以实现单频和双频两种工作模式,具备良好的可重构性。当二极管导通时,该天线为单频工作模式,其谐振频点位于3 GHz,工作带宽可覆盖WIMAX主要频段;而当二极管截止时,天线处于双频工作模式,其谐振频点分别位于3 GHz和5.8 GHz处,工作频带可覆盖WIMAX和部分WILAN频段。此外,不同工作模式下,该天线的远场方向图也随之改变。A frequency and pattern reconfigurable microstrip patch antenna is designed,which consists of a metal floor with an inverted"Ω"slot and a radiation patch,printed on both sides of the substrate.By changing the operating state of the switching diode located at the center of the floor slot,the local structure and the surface current distribution of the antenna will change,and the antenna's working frequency and direction pattern will be reconstructed.The simulation and measurement results show that the antenna can work in both single-frequency and dual-frequency modes.When the diode is in the on-off state,it first works in single-frequency mode,the resonant frequency of the antenna is at 3 GHz,and its working bandwidth covers the main frequency band of world interoperability for microwave access(WiMAX).While the diode is in the cut-off state,the resonant point of the antenna is at 3 GHz and 5.8 GHz respectively,realizing the dual-frequency working mode.And the operating band covers WIMAX and part of the wireless local area networks(WLAN)band,and the antenna far-field pattern changes with different working modes.

关 键 词：可重构 方向图 频率 WLAN 

分 类 号：TN828.4[电子电信—信息与通信工程]