一种接收机AFC电路的设计与实现  

Design and implementation of a receiver circuit with AFC

作　　者：董茂林[1] 周鹏[1] 王传刚[1] 

机构地区：[1]海军航空工程学院青岛校区,山东青岛266041

出　　处：《现代电子技术》2014年第7期71-72,75,共3页Modern Electronics Technique

摘　　要：针对AFC电路在接收机信号处理电路中的重要性,设计实现了一种基于MC1590的AFC电路。该电路在反馈回路中通过鉴频器取样控制VCO产生的本振信号,使输出的中频信号频率稳定,具有输出稳定、失真度小、带负载能力强等优点,满足了接收机信号处理的使用要求。For the importance of AFC in data processing of receiver,an AFC circuit based on MC1590 is designed and im-plemented. The vibration signals generated by VCO is controlled through the discriminator sampling in the feedback loop,which makes the intermediate frequency signal stable,and has the advantages of output stable,small distortion,strong load capacity, can meet the use requirements of the receiver signal processing.

关 键 词：混频器 鉴频器 压控振荡器 取样反馈电路 

分 类 号：TN773-34[电子电信—电路与系统]