Ku/Ka双频共口径微带阵列天线设计  

Design of Ku/Ka Dual-band Shared-Aperture Microstrip Array Antenna

作　　者：刘洋[1] 董涛[1] 王昕[1] 

机构地区：[1]北京卫星信息工程研究所,北京100086

出　　处：《中国空间科学技术》2012年第5期17-20,共4页Chinese Space Science and Technology

摘　　要：采用双频段天线共面嵌套放置,实现了结构紧凑的Ku/Ka双频共口径微带阵列天线设计。Ku频段天线单元采用微带线侧馈,Ka频段天线单元通过在接地板开L形缝隙进行耦合馈电实现圆极化工作。仿真和测试结果表明了设计的可行性。Ku/Ka频段天线仿真的相对带宽分别为2.2%和4.3%,实测结果分别为2.1%和3.4%。该结构的天线可应用于Ku/Ka频段的卫星通信中。A novel Ku/Ka dual-band shared-aperture microstrip array antenna was proposed. The antenna elements were placed on a single layer to keep the structure compact. The Ku-band elements were fed at the edges by microstrip lines, while the Ka-band was coupled fed by L-shaped apertures in the ground plane to realize circular polarization. The simulated and measured results demonstrate the feasibility of the proposed design. The simulated impedance bandwidth of the antenna is 2.2% for Ku-band and 4.3% for Ka-band respectively, and measured results are 2.1G and 3.4G respectively. The antenna structure is applicable for Ku/Ka dual-band satellite communication.

关 键 词：微带天线 双频共口径天线 耦合馈电 圆极化 卫星通信 

分 类 号：TN929.53[电子电信—通信与信息系统]