基于光纤延迟线的射频信号延时/衰减组件设计  

Design of RF Signal Delay/Attenuation Module Based on Fiber Delay Line

作　　者：王翠珍 唐金元 王思臣 WANG Cuizhen;TANG Jinyuan;WANG Sichen(Qingdao Branch of Naval Aviation University,Qingdao 266041,China)

机构地区：[1]海军航空大学青岛校区,山东青岛266041

出　　处：《仪表技术》2021年第5期5-8,34,共5页Instrumentation Technology

摘　　要：射频信号延时/衰减组件能对射频信号进行不同数值的时间延迟和功率衰减,光纤延迟线能对光信号进行时间延迟。设计了一种基于光纤延迟线的射频信号延时/衰减组件,包含光发射机模块、光纤延迟线模块、光接收机模块、射频放大器模块和程控衰减器模块等功能模块;给出了该射频信号延时/衰减组件的主要技术指标,分析了其主要功能模块的电路结构组成和工作过程。在无线电高度表检测仪中的工程应用表明:该射频信号延时/衰减组件对射频信号的时间延迟精度高,功率衰减范围大,模拟高度值输出数量多,且工作稳定。RF signal delay/attenuation module can carry on different time delay and power attenuation to RF signal, and optical fiber delay line can carry on time delay to optical signal. A RF signal delay/attenuation module based on optical fiber delay line is designed, which includes optical transmitter module, optical fiber delay line module, optical receiver module, RF amplifier module and programmable attenuator module. The main technical specifications of the RF signal delay/attenuation module are given, and the circuit structure and working process of the main functional modules are analyzed. The engineering application in a radio altimeter shows that the RF signal delay/attenuation module has high accuracy in time delay, large power attenuation range, large output of analog height and stable operation.

关 键 词：光纤延迟线 光发射机 光接收机 射频信号 延时 衰减 组件 

分 类 号：TN65[电子电信—电路与系统]