JPS5586209A - Automatic high-frequency level regulator circuit - Google Patents

Automatic high-frequency level regulator circuit

Info

Publication number
JPS5586209A
JPS5586209A JP16385278A JP16385278A JPS5586209A JP S5586209 A JPS5586209 A JP S5586209A JP 16385278 A JP16385278 A JP 16385278A JP 16385278 A JP16385278 A JP 16385278A JP S5586209 A JPS5586209 A JP S5586209A
Authority
JP
Japan
Prior art keywords
variable attenuator
frequency converter
circuit
terminal
frequency
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
JP16385278A
Other languages
Japanese (ja)
Inventor
Yuji Kitahara
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP16385278A priority Critical patent/JPS5586209A/en
Publication of JPS5586209A publication Critical patent/JPS5586209A/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

Landscapes

  • Control Of Amplification And Gain Control (AREA)
  • Radio Relay Systems (AREA)

Abstract

PURPOSE:To simplify circuit constitution while improving its reliability by adjusting the output of a frequency converter by exercising control over the attenuation value of a variable attenuator by a detection current from the frequency converter. CONSTITUTION:An intermediate-frequency signal having passed through variable attenuator 11 is mixed with oscillation power supplied from local oscillator 16 by frequency converter 12 and then outputted to terminal 17a by way of circulator 14 and band-pass filter 17. Then, variation in detection current across a diode inside of frequency converter 12 is supplied to both DC amplifier 13 and variable attenuator 11. Therefore, the attenuation value of variable attenuator 11, adjusted by a bias voltage set by bias circuit 11j, varies with an input voltage from terminal 11k to provide the compensation of a level at terminal 17a all the time. Consequently, the need for an ultra-high frequency detection circuit is eliminated to simplify the circuit while improving its reliability.
JP16385278A 1978-12-22 1978-12-22 Automatic high-frequency level regulator circuit Pending JPS5586209A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16385278A JPS5586209A (en) 1978-12-22 1978-12-22 Automatic high-frequency level regulator circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16385278A JPS5586209A (en) 1978-12-22 1978-12-22 Automatic high-frequency level regulator circuit

Publications (1)

Publication Number Publication Date
JPS5586209A true JPS5586209A (en) 1980-06-28

Family

ID=15781973

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16385278A Pending JPS5586209A (en) 1978-12-22 1978-12-22 Automatic high-frequency level regulator circuit

Country Status (1)

Country Link
JP (1) JPS5586209A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6269738A (en) * 1985-09-21 1987-03-31 Mitsubishi Electric Corp Gain control type transmitter/receiver
JPH08228116A (en) * 1994-11-30 1996-09-03 Nec Corp Level control circuit
WO2004070938A1 (en) * 2003-02-03 2004-08-19 Robert Bosch Gmbh Method and device for adjusting the power of an oscillator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6269738A (en) * 1985-09-21 1987-03-31 Mitsubishi Electric Corp Gain control type transmitter/receiver
JPH08228116A (en) * 1994-11-30 1996-09-03 Nec Corp Level control circuit
WO2004070938A1 (en) * 2003-02-03 2004-08-19 Robert Bosch Gmbh Method and device for adjusting the power of an oscillator
US7414486B2 (en) 2003-02-03 2008-08-19 Robert Bosch Gmbh Device and method for power calibration of an oscillator

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