星载测控系统高性能微带滤波器的精确设计

THE PRECISE DESIGN OF MICROSTRIP NARROW BAND FILTER USED IN SPACEBORNE TT&C SYSTEM

对微带窄带带通滤波器的设计进行了研究。根据工程经验总结了一组实用的计算公式，给出了重要的对应于滤波器中心频率的谐振器长度修正公式；编写了相应的计算机辅助设计程序；给出了两个滤波器计算数据及实测结果。据此设计的高性能平行耦合线微带带通滤波器，具有体积小、质量轻、可靠性高、无需调试等优点。现已通过振动、冲击、辐照、真空高低温循环等空间鉴定试验，成功地应用于中国新一代应用卫星星载测控系统中。

This paper studied the precise design of Microstrip Narrow Band Pass Filter(MNBPF) ,summarized a set of equations according to engineering experience,gave the corrected equation to calculate the length of resonator,compiled the CAD program,gave the data of two practical MNBPFs and measured results.From this,it is conclude that MNBPF is a good filter for spaceborne Telemetry,Tracking and Command(TT&C)system because it has the virtues of small volume,light weight,high reliability and need no adjustment.