一种适用于船载海事卫星通信的天线阵设计  

Design of Antenna Array for Shipborne Maritime Satellite Communication

作　　者：孔令军 赵建森[1] 郭晓亮[1] 王胜正[1] 齐婷婷 Kong lingjun;Zhao Jiansen;Guo Xiaoliang;Wang Shengzheng;Qi Tingting(Merchant Marine Collage,Shanghai Maritime University,Shanghai 201306,China)

机构地区：[1]上海海事大学商船学院,上海201306

出　　处：《测控与通信》2022年第4期11-14,共4页

摘　　要：本文开发了1种具有圆极化特性又具有高增益、低仰角辐射特性的天线阵,天线阵由3个四臂螺旋天线、1个反射板和1个功分器组成,采用调节天线单元间距与仰角的方法,使其具有水平全向圆极化辐射特性。该天线阵还可根据实际通信接收状况调节天线阵结构,从而实现天线阵波束可重构,以实现该天线阵在海上大风浪使船体剧烈摇摆的条件下,仍能保持连续可靠卫星通信。仿真结果表明:该天线阵的阻抗带宽为1.49~2.20GHz,辐射最大增益为5.65dB,0°仰角处具有-1dB增益,具有较好的海上卫星通信能力。An antenna array with circular polarization characteristics and high gain and low elevation radiation characteristics is developed in this paper.The antenna array consists of three four-arm helical antennas,a reflector and a power divider.The method of adjusting the antenna element spacing and elevation Angle makes it have horizontal omnidirectional circular polarization radiation characteristics.The structure of the antenna array can also be adjusted according to the actual communication and reception conditions,so as to realize the reconfiguration of the antenna array beam,so as to realize that the antenna array can maintain continuous and reliable satellite communication under the condition of the ship rocking violently due to the large wind waves at sea.The simulation results show that the impedance bandwidth of the antenna array is 1.49GHz~2.20GHz,the maximum radiation gain is 5.65 dB,and the antenna array has-1 dB gain at the elevation of O degrees,so it has good maritime satellite communication capability.

关 键 词：四臂螺旋 自相移 天线阵列 卫星通信 

分 类 号：TN8[电子电信—信息与通信工程]