KR970004293A - Automatic Gain Control Circuit - Google Patents

Automatic Gain Control Circuit Download PDF

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Publication number
KR970004293A
KR970004293A KR1019950016453A KR19950016453A KR970004293A KR 970004293 A KR970004293 A KR 970004293A KR 1019950016453 A KR1019950016453 A KR 1019950016453A KR 19950016453 A KR19950016453 A KR 19950016453A KR 970004293 A KR970004293 A KR 970004293A
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KR
South Korea
Prior art keywords
amplifier
output
signal
level
control circuit
Prior art date
Application number
KR1019950016453A
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Korean (ko)
Inventor
노병석
Original Assignee
김광호
삼성전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019950016453A priority Critical patent/KR970004293A/en
Publication of KR970004293A publication Critical patent/KR970004293A/en

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Abstract

아날로그통신선로의 자동이득제어회로가 개시된다.An automatic gain control circuit of an analog communication line is disclosed.

본 발명에 따른 자동이득제어회로는 입력신호를 소정의 증폭도로 증폭시켜 출력신호로 제공하며, 바이어스 입력을 갖는 제1증폭부; 상기 제1증폭부의 출력측에 접속되어 상기 제1증폭부의 출력을 정류시켜 출력하는 정류부; 상기 정류부의 출력측에 접속되어 상기 정류부의 출력을 증폭시켜 출력하는 제2증폭부; 상기 제2증폭부의 출력측에 접속되고, 상기 제2증폭부의 출력에 의해 레벨이 조정되는 바이어스신호를 발생시켜 상기 제1증폭부의 바이어스입력에 제공하는 제3증폭부를 포함함을 특징으로 한다.An automatic gain control circuit according to the present invention includes a first amplifier having a bias input by amplifying an input signal with a predetermined amplification degree; A rectifier connected to an output side of the first amplifier, for rectifying and outputting an output of the first amplifier; A second amplifier connected to the output side of the rectifier to amplify and output the output of the rectifier; And a third amplifier connected to the output side of the second amplifier and configured to generate a bias signal whose level is adjusted by the output of the second amplifier and provide it to the bias input of the first amplifier.

본 발명에 따른 자동이득제어회로는 소정의 증폭도를 갖는 증폭부의 출력신호의 일부를 궤환시켜 입력신호의 레벨을 조정시킴으로써 자동적으로 출력신호의 레벨을 조정하는 효과를 갖는다.The automatic gain control circuit according to the present invention has the effect of automatically adjusting the level of the output signal by feeding back part of the output signal of the amplifier having a predetermined degree of amplification and adjusting the level of the input signal.

Description

자동이득제어회로Automatic Gain Control Circuit

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 따른 자동이득제어회로를 보이는 회로도이다.1 is a circuit diagram showing an automatic gain control circuit according to the present invention.

Claims (2)

출력신호의 레벨을 자동적으로 조정하는 장치에 있어서, 입력신호를 소정의 증폭도로 증폭시켜 출력신호로 제공하며, 바이어스입력을 갖는 제1증폭부; 상기 제1증폭부의 출력측에 접속되어 상기 제1증폭부의 출력을 정류시켜 출력하는 정류부; 상기 정류부의 출력측에 접속되어 상기 정류부의 출력을 증폭시켜 출력하는 제2증폭부; 상기 제2증폭부의 출력측에 접속되고, 상기 제2증폭부의 출력에 의해 레벨이 조정되는 바이어스신호를 발생시켜 상기 제1증폭부의 바이어스입력에 제공하는 제3증폭부를 포함하는 자동이득제어회로.An apparatus for automatically adjusting the level of an output signal, the apparatus comprising: a first amplifying unit for amplifying an input signal to a predetermined amplification level and providing the output signal and having a bias input; A rectifier connected to an output side of the first amplifier, for rectifying and outputting an output of the first amplifier; A second amplifier connected to the output side of the rectifier to amplify and output the output of the rectifier; And a third amplifier connected to the output side of the second amplifier, the third amplifier generating a bias signal whose level is adjusted by the output of the second amplifier and providing the bias signal to the bias input of the first amplifier. 제1항에 있어서, 상기 제2증폭부는 차신호증폭부로서 상기 정류수단에서 제공되는 신호의 레벨과 가변저항에 의해 설정되는 레벨과의 차를 증폭시킴을 특징으로 하는 자동이득제어회로.The automatic gain control circuit according to claim 1, wherein the second amplifier amplifies a difference between a level of a signal provided from the rectifying means and a level set by a variable resistor as a difference signal amplifier. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950016453A 1995-06-20 1995-06-20 Automatic Gain Control Circuit KR970004293A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950016453A KR970004293A (en) 1995-06-20 1995-06-20 Automatic Gain Control Circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950016453A KR970004293A (en) 1995-06-20 1995-06-20 Automatic Gain Control Circuit

Publications (1)

Publication Number Publication Date
KR970004293A true KR970004293A (en) 1997-01-29

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ID=66524539

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950016453A KR970004293A (en) 1995-06-20 1995-06-20 Automatic Gain Control Circuit

Country Status (1)

Country Link
KR (1) KR970004293A (en)

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