KR970008837A - Power Gain Circuit with Automatic Gain Control - Google Patents

Power Gain Circuit with Automatic Gain Control Download PDF

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Publication number
KR970008837A
KR970008837A KR1019950020401A KR19950020401A KR970008837A KR 970008837 A KR970008837 A KR 970008837A KR 1019950020401 A KR1019950020401 A KR 1019950020401A KR 19950020401 A KR19950020401 A KR 19950020401A KR 970008837 A KR970008837 A KR 970008837A
Authority
KR
South Korea
Prior art keywords
power amplifier
amplifier circuit
comparator
power
gain control
Prior art date
Application number
KR1019950020401A
Other languages
Korean (ko)
Other versions
KR0152002B1 (en
Inventor
김남흥
Original Assignee
이형도
삼성전기 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 이형도, 삼성전기 주식회사 filed Critical 이형도
Priority to KR1019950020401A priority Critical patent/KR0152002B1/en
Publication of KR970008837A publication Critical patent/KR970008837A/en
Application granted granted Critical
Publication of KR0152002B1 publication Critical patent/KR0152002B1/en

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/001—Digital control of analog signals
    • 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
    • H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers

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  • Amplifiers (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Transmitters (AREA)

Abstract

본 발명은 신호마다 송신거리가 달라지는 휴대폰에 사용되는 전력증폭회로(13)에 있어서 출력이 안정되도록 제어하는 자동이득조절에 관한 것으로, 자동이득조절회로(14)가 전력증폭회로(13)의 출력신호(S2)를 송신에 필요한 최소한의 기준파워레벨값에 비교하여, 전력증폭회로(13)의 바이어스 전원(Vgg)을 조정하는, 그리고 그 조정된 바이어스 전원에 의해 전력증폭기회로(13)의 효율과 출력신호의 안정성을 동시에 만족시키도록 구성된 자동이득제어되는 전력증폭기회로(13)에 관한것이다.The present invention relates to an automatic gain control for controlling the output to be stable in the power amplifier circuit 13 used in a mobile phone whose transmission distance varies for each signal. The automatic gain control circuit 14 outputs the power amplifier circuit 13. By comparing the signal S2 to the minimum reference power level value required for transmission, the bias power supply Vgg of the power amplifier circuit 13 is adjusted, and the efficiency of the power amplifier circuit 13 by the adjusted bias power supply. And an auto gain controlled power amplifier circuit 13 configured to simultaneously satisfy the stability of the and output signals.

Description

자동이득제어되는 전력증폭회로Power Gain Circuit with Automatic Gain Control

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

제2도는 본 발명에 의한 전력증폭회로의 구성을 보이는 블럭도, 제3도는 본 발명에 의한 전력증폭회로의 동작특성을 나타낸 그래프이다.2 is a block diagram showing the configuration of the power amplifier circuit according to the present invention, and FIG. 3 is a graph showing the operation characteristics of the power amplifier circuit according to the present invention.

Claims (1)

전치증폭기(13a)와 전력증폭기(13b)를 포함하여 입력신호를 2단증폭하는 전력증폭기회로(13)와, 전력증폭기회로(13)의 출력신호를 반파검파하고 상기 검파된 신호를 DC 적분하여 비교기(14c)의 한단자에 입력시키는 검파기(14a)와, 중앙처리장치(15)의 출력값을 아날로그양으로 변환하여 비교기(14c)의 다른 단자에 입력시키는 디지탈/아날로그 변환기(14b)와, 비교기의 한 단자에 입력된 검파기(14a)의 출력값을 디지탈/아날로그 변환기(14b)를 통해 비교기의 다른 단자에 입력된 기준값에 비교하여 전력증폭기회로(13)의 바이어스 전원(Vgg)를 조정하는 비교기(14c)를 포함한 자동이득조절회로(14)와, 송신에 필요한 최소한의 파워레벨값을 내부 메모리에 저장하고 거리감지센서(도시생략)로 부터 입력된 거리감지 신호와 상기 저장된 파워값을 비교하여, 일치하는 레벨값을 출력하는 중앙처리장치(15)로 구성됨을 특징으로 하는자동이득제어되는 전력증폭회로.The power amplifier circuit 13, which includes a preamplifier 13a and a power amplifier 13b, a half-amplifies the output signal of the power amplifier circuit 13 and the power amplifier circuit 13, and DC-integrates the detected signal. A detector 14a for inputting to one terminal of the comparator 14c, a digital / analog converter 14b for converting the output value of the central processing unit 15 into an analog amount and inputting it to the other terminal of the comparator 14c, and a comparator A comparator for adjusting the bias power supply (Vgg) of the power amplifier circuit 13 by comparing the output value of the detector 14a input to one terminal of the amplifier to the reference value input to the other terminal of the comparator through the digital / analog converter 14b ( The automatic gain control circuit 14 including 14c) stores a minimum power level value necessary for transmission in an internal memory, and compares the stored power value with a distance sensing signal input from a distance sensor (not shown). Matching les An automatic gain control power amplifier circuit which is characterized by consisting of a central processing unit (15) for outputting a value. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950020401A 1995-07-11 1995-07-11 Power amplifier circuit automatically gain controlled KR0152002B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950020401A KR0152002B1 (en) 1995-07-11 1995-07-11 Power amplifier circuit automatically gain controlled

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950020401A KR0152002B1 (en) 1995-07-11 1995-07-11 Power amplifier circuit automatically gain controlled

Publications (2)

Publication Number Publication Date
KR970008837A true KR970008837A (en) 1997-02-24
KR0152002B1 KR0152002B1 (en) 1998-12-15

Family

ID=19420375

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950020401A KR0152002B1 (en) 1995-07-11 1995-07-11 Power amplifier circuit automatically gain controlled

Country Status (1)

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KR (1) KR0152002B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100456118B1 (en) * 1997-05-15 2004-12-23 엘지전자 주식회사 Device for controlling an output of a high-power amplifier in a mobile communication terminal, specifically concerned with compensating for a transmission output by detecting an output level of the high-power amplifier
KR100657104B1 (en) * 1999-10-22 2006-12-15 엘지전자 주식회사 Circuit for controlling a power amplifier in a mobile communication system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU1060301A (en) * 1999-10-26 2001-05-08 Samsung Electronics Co., Ltd. Apparatus and method for controlling transmission power of mobile station
KR20050111977A (en) * 2004-05-24 2005-11-29 주식회사 텔레매틱스 Apparatus for compensating gain

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100456118B1 (en) * 1997-05-15 2004-12-23 엘지전자 주식회사 Device for controlling an output of a high-power amplifier in a mobile communication terminal, specifically concerned with compensating for a transmission output by detecting an output level of the high-power amplifier
KR100657104B1 (en) * 1999-10-22 2006-12-15 엘지전자 주식회사 Circuit for controlling a power amplifier in a mobile communication system

Also Published As

Publication number Publication date
KR0152002B1 (en) 1998-12-15

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