KR960019980A - Voltage controlled oscillator - Google Patents

Voltage controlled oscillator Download PDF

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Publication number
KR960019980A
KR960019980A KR1019940030109A KR19940030109A KR960019980A KR 960019980 A KR960019980 A KR 960019980A KR 1019940030109 A KR1019940030109 A KR 1019940030109A KR 19940030109 A KR19940030109 A KR 19940030109A KR 960019980 A KR960019980 A KR 960019980A
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KR
South Korea
Prior art keywords
capacitor
diode
grounded
controlled oscillator
terminal
Prior art date
Application number
KR1019940030109A
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Korean (ko)
Other versions
KR0136228B1 (en
Inventor
성수언
Original Assignee
이종수
엘지전자부품 주식회사
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Application filed by 이종수, 엘지전자부품 주식회사 filed Critical 이종수
Priority to KR1019940030109A priority Critical patent/KR0136228B1/en
Publication of KR960019980A publication Critical patent/KR960019980A/en
Application granted granted Critical
Publication of KR0136228B1 publication Critical patent/KR0136228B1/en

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    • 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
    • H03B5/20—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift 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
    • H03B2201/00—Aspects of oscillators relating to varying the frequency of the oscillations
    • H03B2201/02—Varying the frequency of the oscillations by electronic means
    • H03B2201/0208—Varying the frequency of the oscillations by electronic means the means being an element with a variable capacitance, e.g. capacitance diode

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

Abstract

본 발명은 이동통신 기기에서 사용하는 전압제어 발진기에 관한 것으로서, 일단으로 제어전압을 입력받는 제1인덕터와, 상기 제1인덕터의 타단에 캐소드 단자가 접속되고 애노드 단자는 접지된 제1바렉터 다이오드와, 상기 제1바렉터 다이오드의 캐소드 단자에 일단이 접속된 제1캐패시터와, 상기 제1캐패시터의 타단에 일단이 접속되고 타단은 접지된 공진자와, 일단으로 음성신호 또는 데이타신호를 입력받는 제2캐패시터와, 상기 제2캐패시터의 타단에 일단이 접속되고 타단은 접지된 제3캐패시터와, 상기 제3캐패시터와 병렬로 접속된 제2저항과, 상기 제2캐패시터의 타단에 애노드 단자가 접속된 제2바렉터 다이오드와, 상기 제2바렉터 다이오드의 캐소드 단자에 일단이 접속되고 타단은 구동전원과 접속된 제1저항과, 상기 제2바렉터 다이오드의 캐소드 단자에 일단이 접속되고 타단은 상기 공진자의 일단에 접속된 제4캐패시터와, 상기 공진자와 캐패시터로 연결된 발진부로 구성된 것을 특징으로 한다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a voltage controlled oscillator for use in a mobile communication device, comprising: a first inductor receiving a control voltage at one end thereof; A first capacitor having one end connected to a cathode terminal of the first varistor diode, a first end connected to the other end of the first capacitor and the other end being grounded, and receiving a voice signal or a data signal at one end thereof; A second capacitor, a third capacitor having one end connected to the other end of the second capacitor and the other end being grounded, a second resistor connected in parallel with the third capacitor, and an anode terminal connected to the other end of the second capacitor A second resistor diode, a first resistor connected at one end to a cathode terminal of the second varactor diode and a second resistor connected to a driving power source, and a caching of the second varactor diode. One end is connected to the de-terminal and the other end is characterized by consisting of a fourth capacitor and connected to the oscillating resonator and a capacitor connected to one end of said resonator.

본 발명에 의한 전압제어 발진기는 자체적으로 발진 주파수에 따른 음성변조감도의 변조편차가 발생하지 않아 리미트 회로를 추가하지 않아도 되고, 복조시 데이타의 신뢰도가 우수해지는 효과가 있다.The voltage controlled oscillator according to the present invention does not generate a modulation variation of the voice modulation sensitivity according to the oscillation frequency itself, so that a limit circuit does not need to be added, and data reliability is excellent when demodulating.

Description

전압제어 발진기Voltage controlled oscillator

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제3도는 본 발명에 의한 전압제어 발진기의 구성 회로도이다.3 is a circuit diagram of a voltage controlled oscillator according to the present invention.

Claims (1)

일단으로 제어전압을 입력받는 제1인덕터와, 상기 제1인덕터의 타단에 캐소드 단자가 접속되고 애노드 단자는 접지된 제1바렉터 다이오드와, 상기 제1바렉터 다이오드의 캐소드 단자에 일단이 접속된 제1캐패시터와, 상기 제1캐패시터의 타단에 일단이 접속되고 타단은 접지된 공진자와, 일단으로 음성신호 또는 데이타신호를 입력받는 제2캐패시터와, 상기 제2캐패시터의 타단에 일단이 접속되고 타단은 접지된 제3캐패시터와, 상기 제3캐패시터와 병렬로 접속된 제2저항과, 상기 제2캐패시터의 타단에 애노드 단자가 접속된 제2바렉터 다이오드와, 상기 제2바렉터 다이오드의 캐소드 단자에 일단이 접속되고 타단은 구동전원과 접속된 제1저항과, 상기 제1바렉터 다이오드의 캐소드 단자에 일단이 접속되고 타단은 상기 공진자의 일단에 접속된 제4캐패시터와, 상기 공진자와 캐패시터로 연결된 발진부로 구성된 것을 특징으로 하는 하는 전압 제어 발진기.A first inductor receiving a control voltage at one end thereof, a cathode terminal connected to the other end of the first inductor, and an anode terminal connected to a grounded first varistor diode, and one end connected to a cathode terminal of the first varistor diode A first capacitor, one end of which is connected to the other end of the first capacitor and the other end of which is grounded, a second capacitor that receives a voice signal or a data signal to one end of the first capacitor, and one end of the other end of the second capacitor, The other end is a grounded third capacitor, a second resistor connected in parallel with the third capacitor, a second varistor diode having an anode terminal connected to the other end of the second capacitor, and a cathode of the second varistor diode. A fourth capacitor having one end connected to a terminal and the other end connected to a driving power supply and one end connected to a cathode terminal of the first varactor diode and the other end connected to one end of the resonator The emitter and the voltage controlled oscillator, characterized in that consisting of the oscillation unit is connected to the resonator and a capacitor. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940030109A 1994-11-16 1994-11-16 Voltage control oscillator KR0136228B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940030109A KR0136228B1 (en) 1994-11-16 1994-11-16 Voltage control oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940030109A KR0136228B1 (en) 1994-11-16 1994-11-16 Voltage control oscillator

Publications (2)

Publication Number Publication Date
KR960019980A true KR960019980A (en) 1996-06-17
KR0136228B1 KR0136228B1 (en) 1998-05-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940030109A KR0136228B1 (en) 1994-11-16 1994-11-16 Voltage control oscillator

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Publication number Publication date
KR0136228B1 (en) 1998-05-15

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