摘要
针对接收机对中频放大电路的要求,设计实现了一种基于宽带放大器L1590的中频AGC放大电路。在介绍L1590的基础上对其整体结构进行了详细的设计,并根据电路要求设计了跟随器输出电路及取样反馈电路,该放大电路具有增益高、AGC范围宽、负载能力强、输出幅度恒定、工作性能稳定等优点,能够满足一般接收机的使用场合。
Aiming at the demands of middle- frequency amplifier in receiver, a middle- frequency amplifier with AGC based on broadband amplifier L1590 is designed and implemented. Based on the presentation of L1590 and the demand of the circuit,the integrated frame,output circuit and sampler are particularly designed. This amplifier possesses with the excellence of high gain,broad range of AGC,high reliability and so on. It can be used in the ordinary receiver.
出处
《现代电子技术》
2008年第5期69-70,共2页
Modern Electronics Technique
关键词
中频放大器
AGC
集成宽放
取样反馈电路
intermediate frequency amplifier
AGC
integration broadband amplifier
sampling circuit with feedback
