摘要
转发器是通信卫星中的通信分系统,是通信卫星的核心。模拟转发器作为通信卫星转发器地面测试的专用设备,主要用于模拟该转发器的频率关系及电平关系。在介绍转发器的结构、特点的基础上,对转发器噪声系数、增益分配、电磁兼容等转发器设计中的关键问题进行分析,并给出某一采用一次变频体制方案的Ku波段模拟转发器的系统实现方法。最后得到系统测试结果,证明了设计的可行性和可靠性。
A transponder is the communication subsystem of a communication satellite.As the special equipment for the communication satellite transponder's ground testing,simulate transponders are mainly used for simulating the relations of transponder's frequency and level.The structure and characteristics of the transponder are introduced in this paper.The simulate transponder's key techniques such as NF,gain distribute,and EMC characteristics are analyzed in detail.A scheme adopting the simple frequency conversion system to implement a sort of simulate transponder is provided.Test result proves the feasibility and reliability of the design.
出处
《电讯技术》
北大核心
2003年第4期77-80,共4页
Telecommunication Engineering
