一种X波段波导缝隙天线的设计与仿真  

Design and Simulation of Waveguide Aperture Antenna Working in X-band

作　　者：李高升[1] 卢中昊[1] 刘锋[1] 何建国[1] 

机构地区：[1]国防科学技术大学电子科学与工程学院,湖南长沙410073

出　　处：《现代电子技术》2010年第21期5-8,12,共5页Modern Electronics Technique

基　　金：武器装备预研基金(9140A04020310KG0112;9140A31020609KG0170)

摘　　要：给出了波导缝隙天线设计步骤,设计一种X波段波导缝隙天线,计算了天线口径、波导数量、缝隙的单元数量、宽度、位置等参数,设计半高波导宽臂耦合谐振缝魔T和差器,在此基础上完成了天线设计。仿真结果表明,当中心频率为12 GHz时,和波束增益为28.9 dB,第一副瓣电平为-22.2 dB,所设计的天线形式可获得较好的和、差波束方向图、电压驻波比和增益等参数。The procedures for designing a waveguide aperture antenna are presented.A waveguide aperture antenna working in X-band is designed.The aperture of antenna,number of waveguide,and parameters of aperture including number,width and location are calculated.A wide-arm coupling resonant aperture magic T comparator with half-height waveguide is designed,based on which the design of the antenna is finished.Simulation results indicate that gain of the sum beam is 28.9 dB and the first side lobe is-22.2 dB at 12 GHz.The antenna can attain good parameters such as sum and subtract pattern,voltage stand wave ratio and gain.

关 键 词：波导缝隙天线 低副瓣 辐射缝隙 和差器 

分 类 号：TN957.234[电子电信—信号与信息处理]