KR970063911A - Automatic gain control device - Google Patents
Automatic gain control device Download PDFInfo
- Publication number
- KR970063911A KR970063911A KR1019960004690A KR19960004690A KR970063911A KR 970063911 A KR970063911 A KR 970063911A KR 1019960004690 A KR1019960004690 A KR 1019960004690A KR 19960004690 A KR19960004690 A KR 19960004690A KR 970063911 A KR970063911 A KR 970063911A
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- South Korea
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- received signal
- digital
- analog
- signal output
- output
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- Control Of Amplification And Gain Control (AREA)
Abstract
본 발명은 자동 이득조절장치에 관한 것으로서, 수신신호의 전력레벨을 가변이득으로 증폭하는 증폭부, 증폭부에서 증폭된 수신신호를 디지탈화하는 아날로그/디지탈 변환기; 아날로그/디지탈 변환기에서 출력되는 디지탈화된 수신신호를 복조하는 디지탈 복조기, 디지탈 복조기에서 출력되는 복조 수신신호의 전력레벨 평균값을 구하여 소정의 기준값과의 차이가 줄어들도록 하는 m 비트의 이득조정신호를 출력하는 자동이득조정기, 자동 이득조정기에서 출력되는 m 비트의 이득조정신호를 아날로그 형태로 변환하는 디지탈/아날로그 변환기, 수신신호의 전력레벨을 검파하여 검출된 수신신호는 디지탈 복조기로 인가하고, k 비트의 검출레벨을 검출하는 전력검파기와, 전력검파기에서 출력되는 k 비트의 검출레벨과 디지탈/아날로그 변환기에서 출력되는 이득조정 신호를 가산하여 가변이득을 조정하기 위하여 증폭부로 출력하는 덧셈기를 구비한다. 따라서, 피드 포워드 루프와 피드백 루프를 가지도록 구성함으로써 이득조정범위와 정확도를 개선시키는 것과 동시에 응답속도를 향상시킬 수 있다.The present invention relates to an automatic gain control device, and more particularly, to an automatic gain control device that includes an amplifier for amplifying a power level of a received signal by a variable gain, an analog / digital converter for digitizing a received signal amplified by the amplifier; A digital demodulator for demodulating a digitized received signal output from the analog / digital converter, an average power level value of a demodulated received signal output from the digital demodulator, and outputting an m-bit gain adjustment signal for reducing a difference from a predetermined reference value An automatic gain adjuster, a digital / analog converter for converting an m-bit gain adjustment signal output from the automatic gain adjuster into an analog form, a power level detection circuit for detecting a power level of the received signal, And an adder for adding the k-bit detection level output from the power detector and the gain adjustment signal output from the digital-to-analog converter to output to the amplification unit for adjusting the variable gain. Therefore, by configuring to have the feedforward loop and the feedback loop, it is possible to improve the response adjustment speed while improving the gain adjustment range and accuracy.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.
제3도는 본 발명에 의한 자동 이득조절장치를 나타낸 블럭도.3 is a block diagram showing an automatic gain control apparatus according to the present invention;
제4도는 제3도에 있어서 전력검파기의 세부 구성도.FIG. 4 is a detailed configuration diagram of the power detector in FIG. 3; FIG.
제5도는 제3도에 있어서 덧셈기의 세부 구성도.FIG. 5 is a detailed diagram of the adder in FIG. 3; FIG.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960004690A KR970063911A (en) | 1996-02-26 | 1996-02-26 | Automatic gain control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960004690A KR970063911A (en) | 1996-02-26 | 1996-02-26 | Automatic gain control device |
Publications (1)
Publication Number | Publication Date |
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KR970063911A true KR970063911A (en) | 1997-09-12 |
Family
ID=66222345
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019960004690A KR970063911A (en) | 1996-02-26 | 1996-02-26 | Automatic gain control device |
Country Status (1)
Country | Link |
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KR (1) | KR970063911A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100665137B1 (en) * | 2004-12-02 | 2007-01-04 | 한국전자통신연구원 | Apparatus and method of controlling automatic gain wireless packet communication system |
KR100767547B1 (en) * | 2001-05-14 | 2007-10-16 | 엘지노텔 주식회사 | Auto gain control apparatus of cdma digital receiver |
-
1996
- 1996-02-26 KR KR1019960004690A patent/KR970063911A/en not_active Application Discontinuation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100767547B1 (en) * | 2001-05-14 | 2007-10-16 | 엘지노텔 주식회사 | Auto gain control apparatus of cdma digital receiver |
KR100665137B1 (en) * | 2004-12-02 | 2007-01-04 | 한국전자통신연구원 | Apparatus and method of controlling automatic gain wireless packet communication system |
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