Fast and stable AGC amplifier

The invention relates to a fast and stable AGC amplifier and belongs to the technical field of signal amplification; the fast and stable AGC amplifier comprises a front stage VGA amplifier circuit (1), a rear stage VGA amplifier circuit (2), a successive detection logarithmic amplifier circuit (3) a...

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Bibliographische Detailangaben
Hauptverfasser:	PANG YOUBING, YANG CHAO, TANG KERAN, MA CHAOJI, LIU DENGXUE, YANG FAN, AI ZHAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BASIC ELECTRONIC CIRCUITRY CALCULATING COMPUTING CONTROL OF AMPLIFICATION COUNTING ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY PHYSICS
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Beschreibung
Zusammenfassung:	The invention relates to a fast and stable AGC amplifier and belongs to the technical field of signal amplification; the fast and stable AGC amplifier comprises a front stage VGA amplifier circuit (1), a rear stage VGA amplifier circuit (2), a successive detection logarithmic amplifier circuit (3) and a voltage dividing circuit (4); the front stage VGA amplifier circuit (1) and the rear stage VGAamplifier circuit (2) are connected in series; the signal input end of the successive detection logarithmic amplifier circuit (3) is connected to the signal input end of the front stage VGA amplifiercircuit (1); the input end of the voltage dividing circuit (4) is connected to the output end of the successive detection logarithmic amplifier circuit (3); and the output end of the voltage dividingcircuit (4) is connected to the control end Vagc of the front stage VGA amplifier circuit (1) and control end Vagc of the rear stage VGA amplifier circuit (2). According to the fast and stable AGC amplifier provided by the inve