自动增益控制电路——理论和设计

自动增益控制电路——理论和设计
Intheearlyyearsofradiocircuits,fading(definedasslowvariationsintheamplitudeofthereceivedsignals)requiredcontinuingadjustmentsinthereceiver’sgaininordertomaintainarelativeconstantoutputsignal.Suchsituationledtothedesignofcircuits,whichprimaryidealfunctionwastomaintainaconstantsignallevelattheoutput,regardlessofthesignal’svariationsattheinputofthesystem.Originally,thosecircuitsweredescribedasautomaticvolumecontrolcircuits,afewyearslatertheyweregeneralizedunderthenameofAutomaticGainControl(AGC)circuits[1,2]. 本软件ID:3478756