JPS5956855U - AGC circuit - Google Patents

AGC circuit

Info

Publication number
JPS5956855U
JPS5956855U JP14951382U JP14951382U JPS5956855U JP S5956855 U JPS5956855 U JP S5956855U JP 14951382 U JP14951382 U JP 14951382U JP 14951382 U JP14951382 U JP 14951382U JP S5956855 U JPS5956855 U JP S5956855U
Authority
JP
Japan
Prior art keywords
amplifier
agc
agc circuit
frequency converter
voltage
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP14951382U
Other languages
Japanese (ja)
Inventor
勉 五十嵐
酒井　恒夫
秀雄 相沢
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alpine Electronics Inc
Original Assignee
Alpine Electronics Inc
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 Alpine Electronics Inc filed Critical Alpine Electronics Inc
Priority to JP14951382U priority Critical patent/JPS5956855U/en
Publication of JPS5956855U publication Critical patent/JPS5956855U/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の１実施例であるＦＭ受信機の要部回路
、第２図は本考案の１実施例によるアンテナ入力に対す
るＡＧＣ電圧の特性図、第３図は本考案の１実施例によ
る妨害波アンテナ入力に対する各希望入力レベルのＡＧ
Ｃ電圧の特性図であ　　　　□る。 ２・・・ＲＦ増幅器、３・・・周波数変換器、４・・・
ＩＦ増幅器、５・・・ＡＧＣ増幅器、６・・・ＡＧＣ増
幅器、１３〜１５・・・抵抗、１６・・・コンデ゛ンサ
、１７・・・ダイオード、２２・・・ＭＯＳ）ランジス
タ。Fig. 1 is a main circuit of an FM receiver according to an embodiment of the present invention, Fig. 2 is a characteristic diagram of AGC voltage with respect to antenna input according to an embodiment of the present invention, and Fig. 3 is an embodiment of the present invention. AG of each desired input level for the interference antenna input by
This is a characteristic diagram of C voltage. 2...RF amplifier, 3...frequency converter, 4...
IF amplifier, 5...AGC amplifier, 6...AGC amplifier, 13-15...resistance, 16...capacitor, 17...diode, 22...MOS) transistor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ＲＦ増幅器と、周波数変換器と、ＩＦ増幅器と、ＩＦ増
幅器の出力に応じて第１のＡＧＣ電圧を発生する第１の
ＡＧＣ電圧発生器と、周波数変換器のＲ票客ル穎葦Ｈ’
、０．Ａ：にＪＭ、：ｆ、艷；２２のＡＧＣ電圧の合成
電圧によりＲＦ増幅器の利得を制御する様にしたことを
特徴とするＡＧＣ回路。an RF amplifier, a frequency converter, an IF amplifier, a first AGC voltage generator that generates a first AGC voltage according to the output of the IF amplifier, and an R-value converter H' of the frequency converter.
, 0. An AGC circuit characterized in that the gain of an RF amplifier is controlled by a composite voltage of 22 AGC voltages.
JP14951382U 1982-10-01 1982-10-01 AGC circuit Pending JPS5956855U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14951382U JPS5956855U (en) 1982-10-01 1982-10-01 AGC circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14951382U JPS5956855U (en) 1982-10-01 1982-10-01 AGC circuit

Publications (1)

Publication Number Publication Date
JPS5956855U true JPS5956855U (en) 1984-04-13

Family

ID=30331873

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14951382U Pending JPS5956855U (en) 1982-10-01 1982-10-01 AGC circuit

Country Status (1)

Country Link
JP (1) JPS5956855U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5011009A (en) * 1973-05-29 1975-02-04
JPS56149108A (en) * 1980-04-21 1981-11-18 Nec Corp Automatic gain control voltage outputting circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5011009A (en) * 1973-05-29 1975-02-04
JPS56149108A (en) * 1980-04-21 1981-11-18 Nec Corp Automatic gain control voltage outputting circuit

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