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KR970068134A - 송수신기의 증폭회로 - Google Patents

송수신기의 증폭회로 Download PDF

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Publication number
KR970068134A
KR970068134A KR1019970011041A KR19970011041A KR970068134A KR 970068134 A KR970068134 A KR 970068134A KR 1019970011041 A KR1019970011041 A KR 1019970011041A KR 19970011041 A KR19970011041 A KR 19970011041A KR 970068134 A KR970068134 A KR 970068134A
Authority
KR
South Korea
Prior art keywords
signal
circuit
amplifier circuit
variable
current
Prior art date
Application number
KR1019970011041A
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English (en)
Other versions
KR100266505B1 (ko
Inventor
사다오 이가라시
가즈하루 아오끼
사또시 우라베
Original Assignee
가다오까 마사다까
아루푸스 덴키 가부시키 가이샤
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.)
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Publication date
Application filed by 가다오까 마사다까, 아루푸스 덴키 가부시키 가이샤 filed Critical 가다오까 마사다까
Publication of KR970068134A publication Critical patent/KR970068134A/ko
Application granted granted Critical
Publication of KR100266505B1 publication Critical patent/KR100266505B1/ko

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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
    • H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
    • H03G3/3042—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/45—Differential amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transmitters (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Amplifiers (AREA)

Abstract

본 발명은 송신기의 증폭회로에 있어서 간단한 구성으로 큰 다이나믹렌지를 실현하는 것이다.
본 발명에서는 IF신호를 증폭하는 전류가변형 가변증폭회로(2, 3)와 RF신호를 증폭하는 전류일정형의 가변증폭회로(4)에 의하여 증폭회로를 구성하였다. I. Q신호는 QPSK 변조회로(1)를 거쳐 2단의 IF단 가변증폭회로(2, 3)에 인가되어 AGC전압(VAGC)에 의거하여 증폭된다. 이 IF신호는 믹서(5)에 의하여 RF신호로 변환되고 RF신호가 RF단가변증폭회로(4)에 가해져 IF단과 공통의 AGC전압(VAGC)에 의거하여 증폭된다. 직선적으로 변화하는 AGC전압(VAGC)은 트랜지스터(Q15, Q16, Q14)에 의하여 지수함수적으로 변화하는 제어전류를 변환되고, 가변증폭회로(2, 3, 4)의 이득(PG) [dB]가 AGC전압(VAGC)에 대하여 직선적으로 제어된다.

Description

송신기의 증폭회로
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
도 2는 도 1의 증폭회로를 상세하게 나타낸 회로도이다.

Claims (2)

  1. 중간주파신호를 증폭하는 구동전류가변형의 중간주파 가변이득증폭회로와, 상기 중간주파 가변이득 증폭회로에 의하여 증폭된 중간주파신호를 고주파신호로 변환하는 주파수변환회로와, 상기 고주파신호를 증폭하는 구동 전류 일정형의 고주파가변이득 증폭회로와, AGC전압을 제어전류로 변환하고, 그 제어전류를 상기 각 가변이득 증폭회로의 구동전류로서 인가함으로써 각각의 가변이득 증폭회로의 증폭도를 제어하는증폭도 제어회로를 구비한 것을 특징으로 하는 송신기의 증폭회로.
  2. 제1항에 있어서, 상기 고주파가변이득 증폭회로는 각각의 에미터가 공통의 정전류원에 접속되어 에미터로부터 고주파신호가 입력되는 적어도 한쌍의 트랜지스터를 구비하며, 한쪽의 트랜지스터의 베이스에는 AGC전압이 가해지고, 다른 쪽의 트랜지스터의 베이스는 접지되고, 한쪽 또는 다른 쪽의 트랜지스터의 콜렉터로부터 신호를 출력하는 것을 특징으로 하는 송신기의 증폭회로.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019970011041A 1996-03-29 1997-03-28 송수신기의증폭회로 KR100266505B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8-077097 1996-03-29
JP07709796A JP3479405B2 (ja) 1996-03-29 1996-03-29 送信機の増幅回路

Publications (2)

Publication Number Publication Date
KR970068134A true KR970068134A (ko) 1997-10-13
KR100266505B1 KR100266505B1 (ko) 2000-09-15

Family

ID=13624292

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019970011041A KR100266505B1 (ko) 1996-03-29 1997-03-28 송수신기의증폭회로

Country Status (8)

Country Link
US (1) US5926749A (ko)
JP (1) JP3479405B2 (ko)
KR (1) KR100266505B1 (ko)
CN (1) CN1086863C (ko)
DE (1) DE19713099B4 (ko)
FR (1) FR2746983B1 (ko)
GB (1) GB2311671B (ko)
SE (1) SE519819C2 (ko)

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GB2326038A (en) * 1997-06-06 1998-12-09 Nokia Mobile Phones Ltd Signal level balancing in quadrature receiver
US6567647B1 (en) * 1998-03-26 2003-05-20 Ericsson Inc. Low noise radio frequency transceivers including circulators
JP2000031763A (ja) * 1998-07-14 2000-01-28 Fujitsu Ltd 可変利得回路
JP3607097B2 (ja) 1998-10-29 2005-01-05 アルプス電気株式会社 送信回路
FI112741B (fi) * 1998-11-26 2003-12-31 Nokia Corp Menetelmä ja järjestely RF-signaalien lähettämiseksi ja vastaanottamiseksi tiedonsiirtojärjestelmien erilaisissa radiorajapinnoissa
US6178313B1 (en) * 1998-12-31 2001-01-23 Nokia Mobile Phones Limited Control of gain and power consumption in a power amplifier
US6341219B1 (en) * 1999-02-05 2002-01-22 Agere Systems Guardian Corp. Single-source automatic power control method and apparatus for frequency-diverse variable-gain stages of a CDMA cellular handset
JP3618055B2 (ja) * 1999-02-05 2005-02-09 富士通株式会社 携帯移動端末および送信装置
JP3592980B2 (ja) 1999-06-29 2004-11-24 株式会社東芝 送信回路及び無線送信装置
JP2001352355A (ja) * 2000-06-08 2001-12-21 Nec Corp ダイレクトコンバージョン受信機及び送受信機
JP4610697B2 (ja) * 2000-06-13 2011-01-12 パナソニック株式会社 送信電力制御方法及び無線通信装置
JP2002033629A (ja) 2000-07-14 2002-01-31 Nec Corp 利得可変増幅回路、およびそれを備えた端末装置
JP2002076947A (ja) * 2000-08-25 2002-03-15 Sharp Corp 送信機
US6542029B1 (en) * 2000-10-11 2003-04-01 Skyworks Solutions, Inc. Variable-slope variable-gain amplifier
US6657494B2 (en) 2001-09-28 2003-12-02 International Business Machines Corporation Variable gain mixer-amplifier with fixed DC operating voltage level
CN100517985C (zh) * 2002-12-20 2009-07-22 株式会社瑞萨科技 发送电路和使用了该电路的收发机
KR100546325B1 (ko) * 2003-05-09 2006-01-26 삼성전자주식회사 신호대 잡음비를 최대한 확보하며 최대 이득 부근의 정밀이득 제어로 전력 손실을 감소시키는 자동 이득 제어기,이를 구비한 이동 통신 단말기의 송신 장치 및 그 방법
US7450915B1 (en) * 2003-12-27 2008-11-11 Sequoia Communications Smart transmitter system
JP4752272B2 (ja) * 2005-01-05 2011-08-17 ソニー株式会社 通信装置
JP2011010192A (ja) * 2009-06-29 2011-01-13 Mitsubishi Electric Corp 可変利得増幅器及びそれを用いた移相器
CN104796103A (zh) * 2015-03-30 2015-07-22 苏州锟恩电子科技有限公司 一种可变增益同相放大器装置

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KR0160687B1 (ko) * 1994-04-29 1999-01-15 김광호 저잡음 증폭기를 갖는 영상신호 수신상치

Also Published As

Publication number Publication date
FR2746983B1 (fr) 1998-12-31
JPH09270649A (ja) 1997-10-14
SE9701080D0 (sv) 1997-03-24
SE519819C2 (sv) 2003-04-15
DE19713099A1 (de) 1997-11-06
GB2311671A (en) 1997-10-01
SE9701080L (sv) 1997-09-30
GB9705725D0 (en) 1997-05-07
CN1086863C (zh) 2002-06-26
KR100266505B1 (ko) 2000-09-15
FR2746983A1 (fr) 1997-10-03
CN1165430A (zh) 1997-11-19
DE19713099B4 (de) 2008-02-14
US5926749A (en) 1999-07-20
GB2311671B (en) 2000-07-19
JP3479405B2 (ja) 2003-12-15

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