一种新型双频双圆极化多波束天线的设计  

A Novel Dual-band Dual Circularly Polarized Multi-beam Antenna

作　　者：曹苗苗 李皓 王煊[1] 李欣冀 王晓飞[1] CAO Miao-miao;LI Hao;WANG Xuan;LI Xin-ji;WANG Xiao-fei(Beijing Institute of Long March Space Vehicle,Beijing 100076,China)

机构地区：[1]北京航天长征飞行器研究所

出　　处：《微波学报》2018年第6期53-57,77,共6页Journal of Microwaves

摘　　要：设计了一种双频双圆极化多波束天线,同时设计了工作在L和S两个频段的4×4微带Butler矩阵,采用该矩阵作为多波束天线的馈电网络,从而实现波束切换。为减小天线安装口径面积,垂直于天线阵面安装Butler矩阵,对整个系统进行仿真优化并进行驻波和方向图测试,结果表明:该多波束天线具有较低的插损且可以实现天线法线±60°范围内增益大于5dB的波束覆盖,适用于要求高增益大角度覆盖的通信系统。In this paper,a novel dual-band dual circularly polarized multi-beam antenna is proposed. As the feeding network of the beam-switched antenna,the 4×4 microstrip Butler matrixes in L and S bands are designed. To reduce the antenna aperture,the new installation method is adopted in this paper,in which the Butler matrixes are placed perpendicular to the antenna array. The simulation and optimization results indicate that this antenna system has low return loss,and can generate four beams covering ±60° working area seamlessly with the gain greater than 5 dB. It can be widely applied to communication systems requiring high gain and wide beam coverage.

关 键 词：双频双圆极化 BUTLER矩阵 多波束天线 

分 类 号：TN820[电子电信—信息与通信工程]