基于腔体滤波器的可调谐微波开关的设计

Design of Tuning Microwave Conversion Switch Based on Cavity Filters[JZ)][HS)]

摘要:

为了满足无人机数据链路测试中信号转换的需求,提出一种可调谐的S波段分波道微波转换开关设计方案,其中采用开关控制电路对输入微波信号进行分波道选择,两路加载集总电容的三阶方杆梳状腔体滤波器对微波信号进行选频、滤波,同时可通过调节调谐螺钉实现两波道中心谐振频点同频或异频,调谐中心频率范围可达20 MHz,自由度较高；微波开关经参数仿真结果满足设计要求,研制完成的微波开关经过实际测试和应用验证,各项技术指标满足使用要求,同时该微波转换开关具有大功率、低损耗、高隔离度等优点,性能稳定、自由度高、易于实现,可满足无人机数据链测试诊断的信号转接要求。

Abstract:

In order to meet the requirement of the signal conversion during the test of the airborne data link of UAV, we advance a tuning S-band double-way microwave conversion switch. The switch-control circuit choose the microwave signal among the double ways. The two pectinate cavity filters loaded capacitance select available signals and get rid of unavailable signals, and the tuning bolts can realize same or different central syntonic frequency. The range of the tuning frequency can reach 20 MHz. It is very flexible. This microwave conversion switch has the advantages of bigger power, lower insertion loss, high isolation, and easy-realized, can meet the electronic counter requirement of radar requirements.