JPS54111709A - Automatic output control circuit - Google Patents

Automatic output control circuit

Info

Publication number
JPS54111709A
JPS54111709A JP1947578A JP1947578A JPS54111709A JP S54111709 A JPS54111709 A JP S54111709A JP 1947578 A JP1947578 A JP 1947578A JP 1947578 A JP1947578 A JP 1947578A JP S54111709 A JPS54111709 A JP S54111709A
Authority
JP
Japan
Prior art keywords
amplifier
high frequency
frequency amplifier
output
controlling
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
JP1947578A
Other languages
Japanese (ja)
Inventor
Hideyo Ono
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP1947578A priority Critical patent/JPS54111709A/en
Publication of JPS54111709A publication Critical patent/JPS54111709A/en
Pending legal-status Critical Current

Links

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

Landscapes

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

Abstract

PURPOSE:To enable the control operation stably and surely with small sized control transistors, by controlling high frequency amplifier with the parallel or series connection of the high frequency amplifier and the current control variable element in high frequency purpose at the input side of the high frequency amplifier. CONSTITUTION:The power amplifier 3 receives the output signal form the high frequency amplifier 2, and the output is fed to the directional coupler 4, controlling the amplifier 2 with the feed back amplifier 5 with the reception of the reflection wave output and progressing wave output accompanied with the transmission power from the coupler 4. At the input side of the amplifier 2, the high frequency amplifier and the current control variable element are in parallel or series connection, controlling the amplifier 2 with the DC current in proportional to the transmission output to the current control variable element. Thus, the control transistor is made small in size and stable and sure control operation can be made.
JP1947578A 1978-02-21 1978-02-21 Automatic output control circuit Pending JPS54111709A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1947578A JPS54111709A (en) 1978-02-21 1978-02-21 Automatic output control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1947578A JPS54111709A (en) 1978-02-21 1978-02-21 Automatic output control circuit

Publications (1)

Publication Number Publication Date
JPS54111709A true JPS54111709A (en) 1979-09-01

Family

ID=12000346

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1947578A Pending JPS54111709A (en) 1978-02-21 1978-02-21 Automatic output control circuit

Country Status (1)

Country Link
JP (1) JPS54111709A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58104011U (en) * 1981-12-29 1983-07-15 三菱電機株式会社 transmitter
JP2006510257A (en) * 2002-12-12 2006-03-23 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ Maintaining linearity of isolator-free power amplifier by dynamic adjustment of gain and phase
JP2006510256A (en) * 2002-12-12 2006-03-23 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ Maintaining linearity of isolator-free power amplifiers by dynamic switching of active devices

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58104011U (en) * 1981-12-29 1983-07-15 三菱電機株式会社 transmitter
JPH0510405Y2 (en) * 1981-12-29 1993-03-15
JP2006510257A (en) * 2002-12-12 2006-03-23 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ Maintaining linearity of isolator-free power amplifier by dynamic adjustment of gain and phase
JP2006510256A (en) * 2002-12-12 2006-03-23 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ Maintaining linearity of isolator-free power amplifiers by dynamic switching of active devices

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