KR920015696A - Automatic Gain Control - Google Patents

Automatic Gain Control Download PDF

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Publication number
KR920015696A
KR920015696A KR1019910001510A KR910001510A KR920015696A KR 920015696 A KR920015696 A KR 920015696A KR 1019910001510 A KR1019910001510 A KR 1019910001510A KR 910001510 A KR910001510 A KR 910001510A KR 920015696 A KR920015696 A KR 920015696A
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KR
South Korea
Prior art keywords
digital
signal
analog
transmitted
voltage value
Prior art date
Application number
KR1019910001510A
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Korean (ko)
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KR0170239B1 (en
Inventor
박상규
Original Assignee
정용문
삼성전자 주식회사
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Application filed by 정용문, 삼성전자 주식회사 filed Critical 정용문
Priority to KR1019910001510A priority Critical patent/KR0170239B1/en
Publication of KR920015696A publication Critical patent/KR920015696A/en
Application granted granted Critical
Publication of KR0170239B1 publication Critical patent/KR0170239B1/en

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices

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  • Control Of Amplification And Gain Control (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

내용 없음No content

Description

자동이득 제어장치Automatic Gain Control

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

제2도는 본 발명에 의한 자동이득제어장치의 구성도, 제3도는 제2도에 도시된 자동이득제어장치의 흐름도.2 is a configuration diagram of the automatic gain control apparatus according to the present invention, and FIG. 3 is a flowchart of the automatic gain control apparatus shown in FIG.

Claims (1)

수신 IF 신호를 받아 그 신호레벨을 일정하게 유지시키는 AGC증폭부(10)와, 상기 AGC증폭부(10)에 입력되는 수신 IF 신호의 반송파를 재생시키는 반송파복구부(20)와, 상기 반송파복구부(20)에서 전송되는 반송파의 위상을 소정각도로 천이시키는 위상천이부(30)와, 상기 AGC증폭부(10)의 출력신호를 반송파복구부(20)와 위상천이부(30)에서 각각 전송되는 반송파에 실어 보내는 제1,2혼합부(40,50)와, 상기 제1,2혼합부(40,50)에서 전송되는 각 신호의 고조파성분을 제거하여 소정채널의 기저대역신호를 출력시키는 제1,2저역통과필터(60,70)와, 상기 제1,2저역통과필터(60,70)에서 각각 전송되는 소정채널의 기저대역신호를 디지탈신호로 샘플링하는 제1,2아날로그/디지탈신호 변환부(80,90)와, 상기 제1,2아날로그/디지탈신호변환부(80,90)에서 샘플링된 디지탈신호를 받아 내장된 프로그램을 수행함으로써 디지탈 직류전압값 및 복조데이타를 출력하는 디지탈신호처리부(100)와, 상기 디지탈신호처리부(100)에서 전송되는 디지탈 직류전압값을 아날로그신호로 변환시켜 AGC증폭부(10)를 제어하는 디지탈/아날로그신호 변환부(110)와, 상기 디지탈/아날로그산호변환부(110)에서 디지탈직류전압값을 아날로그신호로 변환시에 발생되는 양자화잡음을 제거하는 제3저역통과필터(120)를 포함함을 특징으로 하는 자동이득제어장치.An AGC amplifier section 10 that receives the received IF signal and maintains the signal level constant, a carrier recovery section 20 for reproducing the carrier of the received IF signal input to the AGC amplifier section 10, and the carrier recovery section A phase shifter 30 for shifting the phase of the carrier wave transmitted from the unit 20 at a predetermined angle, and an output signal of the AGC amplifier 10 from the carrier recovery unit 20 and the phase shifter 30, respectively. Outputs the baseband signal of a predetermined channel by removing harmonic components of the first and second mixing units 40 and 50 to be carried on the transmitted carrier and the signals transmitted from the first and second mixing units 40 and 50. First and second analog and digital signals for sampling the baseband signals of predetermined channels transmitted from the first and second low pass filters 60 and 70 and the first and second low pass filters 60 and 70, respectively. Receives digital signals sampled by the digital signal converters 80 and 90 and the first and second analog / digital signal converters 80 and 90 The digital signal processor 100 outputs the digital DC voltage value and demodulation data by converting the digital DC voltage value and the demodulated data, and converts the digital DC voltage value transmitted from the digital signal processor 100 into an analog signal to convert the AGC amplifier 10 into an analog signal. The digital / analog signal converting unit 110 for controlling and the third low pass filter 120 for removing the quantization noise generated when the digital DC voltage conversion unit 110 converts the digital DC voltage value into an analog signal. Automatic gain control device characterized in that it comprises a. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910001510A 1991-01-29 1991-01-29 Automatic gain control KR0170239B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019910001510A KR0170239B1 (en) 1991-01-29 1991-01-29 Automatic gain control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910001510A KR0170239B1 (en) 1991-01-29 1991-01-29 Automatic gain control

Publications (2)

Publication Number Publication Date
KR920015696A true KR920015696A (en) 1992-08-27
KR0170239B1 KR0170239B1 (en) 1999-03-30

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ID=19310450

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910001510A KR0170239B1 (en) 1991-01-29 1991-01-29 Automatic gain control

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KR (1) KR0170239B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100388967B1 (en) * 2001-04-30 2003-06-25 엘지전자 주식회사 apparatus and method for AGC gain control embodiment using A/D convertor
KR100428716B1 (en) * 2001-12-14 2004-04-28 한국전자통신연구원 Apparatus and method for controlling automatic gain in wireless telecommunication system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100446283B1 (en) * 1997-08-13 2004-10-14 삼성전자주식회사 Multi-stage programmable gain control amplifying apparatus including analog to digital converter and method for correcting gain error in response to the same, especially implementing pga and adc at the same time

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100388967B1 (en) * 2001-04-30 2003-06-25 엘지전자 주식회사 apparatus and method for AGC gain control embodiment using A/D convertor
KR100428716B1 (en) * 2001-12-14 2004-04-28 한국전자통신연구원 Apparatus and method for controlling automatic gain in wireless telecommunication system

Also Published As

Publication number Publication date
KR0170239B1 (en) 1999-03-30

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