KR950003712B1 - 자동이득조절회로 - Google Patents
자동이득조절회로 Download PDFInfo
- Publication number
- KR950003712B1 KR950003712B1 KR1019910015245A KR910015245A KR950003712B1 KR 950003712 B1 KR950003712 B1 KR 950003712B1 KR 1019910015245 A KR1019910015245 A KR 1019910015245A KR 910015245 A KR910015245 A KR 910015245A KR 950003712 B1 KR950003712 B1 KR 950003712B1
- Authority
- KR
- South Korea
- Prior art keywords
- signal
- output
- automatic gain
- gain
- converter
- Prior art date
Links
- 238000000034 method Methods 0.000 claims description 8
- 230000007423 decrease Effects 0.000 claims description 3
- 238000013139 quantization Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000003321 amplification Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
Landscapes
- Control Of Amplification And Gain Control (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
Description
Claims (3)
- 공중선에서 유입된 고주파수신신호를 증폭하기 위한 고주파 증폭기(100)와, 증폭된 고주파수신신호를 중간주파수대역으로 천익시키기 위한 주파수변환기(200)와, 상기 주파수변환기(200)의 출력신호를 이득제어하기 위한 자동이득조절기(300)와, 상기 자동이득조절기(300)에서 이득조절된 신호를 복조하는 복조기(400)를 구비한 통신시스템의 수신장치에 있어서, 상기 자동이득조절기(300)는 상기 주파수변환기의 출력신호를 이득조정전압에 의해 증폭하는 자동이득증폭기(10); 상기 자동이득증폭기(10)로부터 출력되는 신호의 크기에 따라 시간적으로 일정량씩 증가 또는 감소되는 이득제어신호를 발생하는 제1이득제어부(301); 및 상기 자동이득증폭기(10)에 입력되는 직류전압의 레벨값을 추적한 k비트의 양자화신호를 출력하기 위한 레벨검출기(70)와, 상기 제1이득제어부(301)에서 출력되는 이득제어신호를 상기 레벨검출기(70)로부터 출력되는 양자화신호에 의해 조정한 소정의 기준전압에 의해 가변증폭하여 상기 자동이득증폭기(10)의 이득조정전압으로 출력하기 위한 조정전압발생부(80)로 이루어지는 제2이득제어부(302)를 포함하는 것을 특징으로 하는 자동이득조절회로.
- 제1항에 있어서, 상기 레벨검출기(70)는 상기 자동이득증폭기(10)에 입력되는 직류전압의 레벨값을 각각 다른 k개의 기준전압과 비교하고, 비교결과에 따른 k개의 양자화신호를 상기 조정전압발생부로 출력하기 위한 k개의 비교기로 구성되는 것을 특징으로 하는 자동이득조절회로.
- 제2항에 있어서, 상기 조정전압발생부(80)는 상기 레벨검출기(70)에서 출력된 k개의 양자화신호에 의해 k개의 저항을 온 혹은 오프하여 기준전압을 조정하기 위한 기준전압조정기와, 상기 기준전압조정기에서 조정된 기준전압에 의해 상기 제1이득제어부(301)에서 출력되는 이득제어신호를 가변증폭하기 위한 연산증폭기로 구성되는 것을 특징으로 하는 자동이득조절회로.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019910015245A KR950003712B1 (ko) | 1991-08-31 | 1991-08-31 | 자동이득조절회로 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019910015245A KR950003712B1 (ko) | 1991-08-31 | 1991-08-31 | 자동이득조절회로 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR930005340A KR930005340A (ko) | 1993-03-23 |
KR950003712B1 true KR950003712B1 (ko) | 1995-04-17 |
Family
ID=19319449
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019910015245A KR950003712B1 (ko) | 1991-08-31 | 1991-08-31 | 자동이득조절회로 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR950003712B1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20040003122A (ko) * | 2002-06-29 | 2004-01-13 | 삼성전자주식회사 | 이중 자동이득제어회로를 구비하는 전화선 모뎀에서의수신기 및 이중 자동이득제어단계를 구비하는 신호의수신방법 |
-
1991
- 1991-08-31 KR KR1019910015245A patent/KR950003712B1/ko not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20040003122A (ko) * | 2002-06-29 | 2004-01-13 | 삼성전자주식회사 | 이중 자동이득제어회로를 구비하는 전화선 모뎀에서의수신기 및 이중 자동이득제어단계를 구비하는 신호의수신방법 |
Also Published As
Publication number | Publication date |
---|---|
KR930005340A (ko) | 1993-03-23 |
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