JPS5665514A - Control circuit of voltage feedback type - Google Patents

Control circuit of voltage feedback type

Info

Publication number
JPS5665514A
JPS5665514A JP14254879A JP14254879A JPS5665514A JP S5665514 A JPS5665514 A JP S5665514A JP 14254879 A JP14254879 A JP 14254879A JP 14254879 A JP14254879 A JP 14254879A JP S5665514 A JPS5665514 A JP S5665514A
Authority
JP
Japan
Prior art keywords
signal
fet
gate
circuit
output
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
JP14254879A
Other languages
Japanese (ja)
Inventor
Masashi Takayanagi
Kaoru Hatanaka
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.)
Marantz Japan Inc
Original Assignee
Marantz Japan 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 Marantz Japan Inc filed Critical Marantz Japan Inc
Priority to JP14254879A priority Critical patent/JPS5665514A/en
Publication of JPS5665514A publication Critical patent/JPS5665514A/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 achieve the high efficiency and low loss of a transmitter, by using an FET element of 2-gate type for the control element of a signal circuit system and giving the input signal to one gate and the final stage output current to another gate. CONSTITUTION:An input signal is fetched from INPUT and it is first amplified with a voltage control type high input impedance FET circuit FET.AMP. Next, it is delivered to the final stage output amplifier circuit F.AMP via the first stage power amplifier circuit RF.AMP and transmitted as a high frequency power output. The feedback signal for output stabilization is detected from the final output signal and converted into desired signal level with the gate control circuit FGC of an FET circuit via a detector DET and given to the control gate of FET.AMP of the signal main circuit system.
JP14254879A 1979-11-01 1979-11-01 Control circuit of voltage feedback type Pending JPS5665514A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14254879A JPS5665514A (en) 1979-11-01 1979-11-01 Control circuit of voltage feedback type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14254879A JPS5665514A (en) 1979-11-01 1979-11-01 Control circuit of voltage feedback type

Publications (1)

Publication Number Publication Date
JPS5665514A true JPS5665514A (en) 1981-06-03

Family

ID=15317903

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14254879A Pending JPS5665514A (en) 1979-11-01 1979-11-01 Control circuit of voltage feedback type

Country Status (1)

Country Link
JP (1) JPS5665514A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04277940A (en) * 1991-03-05 1992-10-02 Sharp Corp Antenna power controller

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS526589A (en) * 1975-07-04 1977-01-19 Hitachi Ltd Monochrometor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS526589A (en) * 1975-07-04 1977-01-19 Hitachi Ltd Monochrometor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04277940A (en) * 1991-03-05 1992-10-02 Sharp Corp Antenna power controller

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