遥测地面自跟踪天线的设计

Design of Telemetry Ground Auto-tracking Antenna

由于武器和航天事业的发展,对遥测系统的要求越来越高,设计了一款工作在2.2~2.3 GHz频带内的遥测地面自跟踪天线,该天线包括天线阵列和双圆极化和差网络两部分。天线单元增益大于8 dBic, 4×4天线阵列增益可以达到18 dBic。双圆极化和差网络很好地实现和差波束并可以同时实现左旋圆极化和右旋圆极化。其中和波束用来接收信号,差波束用来追踪,保证目标不丢失,能够实现很好的导弹实时追踪。通过测试,遥测地面自跟踪天线各项指标满足设计要求,能够准确实现自跟踪功能,且在恶劣条件下可以全天候正常工作。

Due to the development of weapons and space industry,the requirements for telemetry system are getting higher and higher,so a telemetry ground auto-tracking antenna working in 2.2~2.3 GHz band is designed,which includes two parts:antenna array and dual circular polarization sum-and-difference network.The gain of antenna element is more than 8 dBic,the gain of 4×4 antenna array can reach 18 dBic.The dual circular polarization sum-and-difference network can realize sum and difference beam well and can realize left and right circular polarization at the same time.The sum beams are used to receive signals,and the difference beams are used to track to ensure that the target is not lost,which can achieve good real-time missile tracking.Through the test,the specifications of the telemetry ground auto-tracking antenna meet the design requirements,and can accurately realize the auto-tracking function,and can work normally in all-weather under bad conditions.