JPS5564407A - Fet gate bias circuit - Google Patents

Fet gate bias circuit

Info

Publication number
JPS5564407A
JPS5564407A JP13787678A JP13787678A JPS5564407A JP S5564407 A JPS5564407 A JP S5564407A JP 13787678 A JP13787678 A JP 13787678A JP 13787678 A JP13787678 A JP 13787678A JP S5564407 A JPS5564407 A JP S5564407A
Authority
JP
Japan
Prior art keywords
output
circuit
capacitor
gate
transistor
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
JP13787678A
Other languages
Japanese (ja)
Inventor
Kotaro Manabe
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13787678A priority Critical patent/JPS5564407A/en
Publication of JPS5564407A publication Critical patent/JPS5564407A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/12—Transference of modulation from one carrier to another, e.g. frequency-changing by means of semiconductor devices having more than two electrodes
    • H03D7/125—Transference of modulation from one carrier to another, e.g. frequency-changing by means of semiconductor devices having more than two electrodes with field effect transistors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

PURPOSE:To make it possible to supply the best gate bias to an apparatus with a high-frequency circuit by reversely biasing between the gate and source of FET on the basis of the output of a rectifying method of rectifying the output of a sine wave generating method. CONSTITUTION:High frequency (RF) input (f0) is applied to mixing method 1 through input capacitor C0. Local oscillating stage 2 consists of transistor Q0, etc., applied with the output of tank circuit 3, and the emitter output of transistor Q0 is positively fed back by way of a electrostatic capacity divider circuit composed of capacitors C5 and C6 so as to extract sine-wave output (fosc). Further, rectifier circuit 4 consists of capacitor C10 holding the peak value of diode D0. Mixing stage 1 consists of a tuning circuit composed of common-source N-channel depletion MOSFETM0, capacitor C8 and coil L0. To gate G of FETM0, output-V of rectifier circuit 4 is applied by way of resistance R7.
JP13787678A 1978-11-10 1978-11-10 Fet gate bias circuit Pending JPS5564407A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13787678A JPS5564407A (en) 1978-11-10 1978-11-10 Fet gate bias circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13787678A JPS5564407A (en) 1978-11-10 1978-11-10 Fet gate bias circuit

Publications (1)

Publication Number Publication Date
JPS5564407A true JPS5564407A (en) 1980-05-15

Family

ID=15208754

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13787678A Pending JPS5564407A (en) 1978-11-10 1978-11-10 Fet gate bias circuit

Country Status (1)

Country Link
JP (1) JPS5564407A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02126058U (en) * 1989-03-29 1990-10-17

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02126058U (en) * 1989-03-29 1990-10-17

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