用ADI的芯片，AD8367、AD8361、AD820设计的AGC电路（自动增益控制），控制电压可外部输入实现VGA功能，或者闭环控制，实现AGC功能。VGA范围30dB，AGC范围40dB。

基于峰值检波的自动增益控制器的设计，使用压控增益芯片VCA810，增益范围在-40dB到60dB,输入控制电压为-2.5V到0V，内附详细调试资料，曾在全国大学生电子设计竞赛中使用。

压控增益放大器(VCA)模块(VCA810)(-40dB至+40dB增益可调)(FPGA或单片机外围模块)【含原理图和器件清单】

本标准规定了雷达接收分系统的动态范围、镜像频率抑制度、增益、带宽的定义和测试方法。

增益带宽可调放大器，AMD杯竞赛A题，设计制作一个增益带宽分别可调的放大器，负载为50Ω阻性负载。

基于multisim13.0的自动增益控制器，根据输入信号的范围，自动调整增益大小

单片机自动增益放大器

基于AD603程控增益大功率宽带直流放大器的设计.pdf 基于AD603程控增益大功率宽带直流放大器的设计.pdf

In the early years of radio circuits, fading (defined as slow variations in the amplitude of the received signals) required continuing adjustments in the receiver’s gain in order to maintain a relative constant output signal. Such situation led to the design of circuits, which primary ideal function was to maintain a constant signal level at the output, regardless of the signal’s variations at the input of the system. Originally, those circuits were described as automatic volume control circuits, a few years later they were generalized under the name of Automatic Gain Control (AGC) circuits [1,2].

用AD603做成的可变增益放大器，其中介绍了AD603的原理和应用，以及需要注意的问题。