JPS5624806A - High frequency oscillating circuit - Google Patents

High frequency oscillating circuit

Info

Publication number
JPS5624806A
JPS5624806A JP10144079A JP10144079A JPS5624806A JP S5624806 A JPS5624806 A JP S5624806A JP 10144079 A JP10144079 A JP 10144079A JP 10144079 A JP10144079 A JP 10144079A JP S5624806 A JPS5624806 A JP S5624806A
Authority
JP
Japan
Prior art keywords
emitter
constant
circuit
current
oscillating
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
JP10144079A
Other languages
Japanese (ja)
Inventor
Toshio Imai
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 JP10144079A priority Critical patent/JPS5624806A/en
Publication of JPS5624806A publication Critical patent/JPS5624806A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1203—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier being a single transistor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1231—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier comprising one or more bipolar transistors

Landscapes

  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

PURPOSE:To make it possible to put a circuit into the best operation by suppressing the temperature rise of an oscillating element without increasing emitter resitance, by connecting a constant current circuit to the emitter of an oscillating transistor. CONSTITUTION:To the emitter of oscillating transistor 1 constituting the oscillating circuit, constant current circuit 11 is connected by way of high frequency element inductor 7' and by-pass capacitor 6. When the electric power source is put to work, transistor 1 is supplied with a fixed base voltage by base-biasing fixed resistances 9 and 10 and constant electric current flows from constant current circuit 11. With the electric power source on, oscillation starts and as electric current originating in the oscillation flow, the emitter current is suppressed to a constant value by the constant electric current source, so that electric current, that does not originate in the oscillation, of the emitter current will be reduced.
JP10144079A 1979-08-08 1979-08-08 High frequency oscillating circuit Pending JPS5624806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10144079A JPS5624806A (en) 1979-08-08 1979-08-08 High frequency oscillating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10144079A JPS5624806A (en) 1979-08-08 1979-08-08 High frequency oscillating circuit

Publications (1)

Publication Number Publication Date
JPS5624806A true JPS5624806A (en) 1981-03-10

Family

ID=14300744

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10144079A Pending JPS5624806A (en) 1979-08-08 1979-08-08 High frequency oscillating circuit

Country Status (1)

Country Link
JP (1) JPS5624806A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62161206A (en) * 1986-11-29 1987-07-17 Fujitsu Ltd Differential amplifier circuit having constant current source circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62161206A (en) * 1986-11-29 1987-07-17 Fujitsu Ltd Differential amplifier circuit having constant current source circuit

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