一种新型级联式AGC电路设计

摘要

This paper designed a new cascade AGC circuit,regular level control split for cascade control;at the same time,the phase-locked loop technology to extract the feedback control signal.circuit design and test results show that, the new cascade AGC circuit can adapt to the large dynamic range of signal reception and enhance the small signal receiving increasing interest of control accuracy.%本文设计了一种新型级联式AGC电路,将常规的一级控制分拆为级联控制,同时采用锁相环技术提取后级的反馈控制信号.电路设计与测试结果表明,这种新型级联式AGC电路可以适应大动态范围的信号接收,提高微小信号接收时增益控制精度.