一款车载型天通卫星通信天线  

A Vehicle-mounted Tiantong Satellite Communication Antenna

作　　者：王冠君 李德强 谢亚运 WANG Guanjun;LI Deqiang;XIE Yayun(Shanghai High Gain Information Technology Co.,Ltd.,Shanghai 201702,China)

机构地区：[1]上海海积信息科技股份有限公司,上海201702

出　　处：《电讯技术》2020年第12期1496-1501,共6页Telecommunication Engineering

摘　　要：对叠层结构的微带天线采用四端口直接馈电和空间耦合馈电的方式,设计了一种车载型天通卫星通信天线。通过引入寄生单元,大幅度提高了天线的低仰角增益和轴比特性,使其远场方向图呈现宽波束圆极化辐射特性和优异的前后比。天线还集成了天通卫星上下行频段射频收发通道,射频电路的上下行频段间隔离度高,带外抑制和噪声系数性能优异,附加效率和输出功率高。天线可在复杂电磁环境和恶劣的野外环境下保证强劲的移动通信和数据传输能力。A laminated-construction microstrip antenna excited by direct feeding and space-coupled feeding through four excitation ports is presented.By loading parasitic elements,antenna’s low elevation gain and axis-ratio characteristic is significantly enhanced,and its far-field pattern presents wide-beamwidth circularly polarized radiation characteristic and excellent font back ratio(FBR)as well.The antenna also integrates radio frequency(RF)chains of receiving and transmitting channels working at upper and lower frequency band of Tiantong satellite,which exhibits high isolation between upper and lower frequency band,high out-of-band rejection,low noise figure,high power added efficiency and output power.The antenna can ensure reliable mobile communication and data transmission under complex electromagnetic interference and poor weather conditions.

关 键 词：天通卫星 车载天线 宽波束圆极化辐射 数据传输 

分 类 号：TN828.5[电子电信—信息与通信工程]