摘要
详细叙述了四通道自动增益控制器(Automatic Gain Control,AGC)的设计和实现。该AGC具备很高的动态范围(62.75dB)和很宽的输入频带(500MHz),并可用作宽带功率信号的相对检测。首先介绍了设计该AGC的科学目的,着重论述了实现AGC的基本数学原理和电路实现,最后给出了实际电路的测试结果。
This paper describes in detail the design and implementation of a 4-channel automatic gain control（AGC） circuit.The dynamic range of the AGC and input bandwidth are very wide so that it can be used to measure broadband relative signal powers.The paper first gives the scientific objective of the AGC and subsequently discusses the principle and the application of the circuit.The test result of the circuit is finally presented.
出处
《天文研究与技术》
CSCD
2010年第3期207-213,共7页
Astronomical Research & Technology
基金
院重大科研装备研制试点项目VIBI数字基带转换器研究(0784281002)
