JPS5689103A - Oscillating circuit - Google Patents

Oscillating circuit

Info

Publication number
JPS5689103A
JPS5689103A JP16597479A JP16597479A JPS5689103A JP S5689103 A JPS5689103 A JP S5689103A JP 16597479 A JP16597479 A JP 16597479A JP 16597479 A JP16597479 A JP 16597479A JP S5689103 A JPS5689103 A JP S5689103A
Authority
JP
Japan
Prior art keywords
base
emitter
capacity
collector
capacitor
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.)
Granted
Application number
JP16597479A
Other languages
Japanese (ja)
Other versions
JPS6119165B2 (en
Inventor
Atsushi Ogawa
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP16597479A priority Critical patent/JPS5689103A/en
Priority to US06/212,745 priority patent/US4386327A/en
Priority to GB8039285A priority patent/GB2066607B/en
Priority to DE3047299A priority patent/DE3047299C2/en
Publication of JPS5689103A publication Critical patent/JPS5689103A/en
Publication of JPS6119165B2 publication Critical patent/JPS6119165B2/ja
Granted 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
    • 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
    • H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
    • H03B2200/0002—Types of oscillators
    • H03B2200/0006—Clapp oscillator
    • 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
    • H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
    • H03B2200/0002—Types of oscillators
    • H03B2200/0008—Colpitts oscillator

Landscapes

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

Abstract

PURPOSE:To reduce the chip area to prevent obstruction to oscillation action due to the parasitic capacity, by utilizing the capacity between the base and the collector and the capacity between the base and the emitter of a transistor to form capacitors. CONSTITUTION:Multiemitter transistor Q12 for equivalent capacitor forms capacitor C11 between the base and the collector and forms capacitor C12 between the base and the emitter. The base and the emitter are connected to the emitter and the base of transistor Q11, respectively, and the collector is connected to power supply terminal VCC. Since the parasitic capacity formed in capacitor C12 is inserted between the power supply VCC line and the earth which becomes the reference potential point, the parasitic capacity has no influence upon the oscillation operation of the circuit.
JP16597479A 1979-12-20 1979-12-20 Oscillating circuit Granted JPS5689103A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP16597479A JPS5689103A (en) 1979-12-20 1979-12-20 Oscillating circuit
US06/212,745 US4386327A (en) 1979-12-20 1980-12-03 Integrated circuit Clapp oscillator using transistor capacitances
GB8039285A GB2066607B (en) 1979-12-20 1980-12-08 Oscillator
DE3047299A DE3047299C2 (en) 1979-12-20 1980-12-16 Oscillator with an active element formed in a semiconductor substrate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16597479A JPS5689103A (en) 1979-12-20 1979-12-20 Oscillating circuit

Publications (2)

Publication Number Publication Date
JPS5689103A true JPS5689103A (en) 1981-07-20
JPS6119165B2 JPS6119165B2 (en) 1986-05-16

Family

ID=15822532

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16597479A Granted JPS5689103A (en) 1979-12-20 1979-12-20 Oscillating circuit

Country Status (1)

Country Link
JP (1) JPS5689103A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS637005A (en) * 1986-06-27 1988-01-12 Sony Corp High frequency oscillation circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS637005A (en) * 1986-06-27 1988-01-12 Sony Corp High frequency oscillation circuit

Also Published As

Publication number Publication date
JPS6119165B2 (en) 1986-05-16

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