摘要
针对卫星通信系统对双极化天线的隔离度、口径效率及端口隔离度等指标提出的要求,设计了一种高效率双极化背腔阵列天线,天线辐射单元采用方口喇叭,辐射效率高,采用空气悬置带线馈电网络大大降低了馈电损耗,采用反相馈电技术改善了天线的交叉极化隔离度。重点讨论了2×2子阵的口径效率、交叉极化和端口隔离。利用仿真软件进行了优化仿真分析,在此基础上研制了16×32阵列样件,对其电性能进行了测量,测试结果表明,此双极化阵列天线具有辐射效率高、交叉极化电平低、端口隔离度高的特点。
In this paper,a novel dual-polarization cavity-backed array antenna at K-band is introduced.The radiation aperture-efficiency, cross-polarization,port isolation of a 2×2 sub-array are discussed,and optimized by software.A 16×32 array prototype is developed and tested.The measurement results show that the dual-polarization array antenna proposed in this paper has characteristics such as high efficiency,low cross-polarization level and high port isolation.
出处
《无线电通信技术》
2015年第5期64-66,共3页
Radio Communications Technology
关键词
双极化
背腔
交叉极化
口径效率
dual-polarization
cavity-backed
cross-polarization
aperture-efficiency
