KR960027344A - Capacitor Switching Voltage Controlled Oscillators - Google Patents

Capacitor Switching Voltage Controlled Oscillators Download PDF

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Publication number
KR960027344A
KR960027344A KR1019940032893A KR19940032893A KR960027344A KR 960027344 A KR960027344 A KR 960027344A KR 1019940032893 A KR1019940032893 A KR 1019940032893A KR 19940032893 A KR19940032893 A KR 19940032893A KR 960027344 A KR960027344 A KR 960027344A
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KR
South Korea
Prior art keywords
capacitor
transmission
reception
switching
voltage
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KR1019940032893A
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Korean (ko)
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KR0137913B1 (en
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서석철
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정장호
Lg 정보통신 주식회사
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Publication of KR960027344A publication Critical patent/KR960027344A/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
    • H03B5/08—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
    • H03B5/1237—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 comprising means for varying the frequency of the generator
    • H03B5/1262—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 comprising means for varying the frequency of the generator the means comprising switched elements
    • H03B5/1265—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 comprising means for varying the frequency of the generator the means comprising switched elements switched capacitors
    • 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
    • H03B5/1237—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 comprising means for varying the frequency of the generator
    • H03B5/124—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 comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance
    • H03B5/1243—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 comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance the means comprising voltage variable capacitance diodes

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

Abstract

본 발명은 캐패시터 스위칭 전압제어 발진기에 관한 것으로, 특히 CT-2시스템의 RF모듈, 단방향 무전기 및 시분할 다원접속(TDMA)방식의 무선통신 시스템에서 캐패시터 스위칭을 통해 송, 수신 국부발진 주파수를 한개의 모듈에서 발생시킬 수있는 캐패시터 스위칭 전압제어 발진기(VCO)에 관한 것이다.The present invention relates to a capacitor switching voltage controlled oscillator, and in particular, one module for transmitting and receiving local oscillation frequency through capacitor switching in an RF module, a unidirectional radio and a time division multiple access (TDMA) wireless communication system of a CT-2 system. A capacitor switching voltage controlled oscillator (VCO) that can be generated by

본 캐패시터 스위칭 전압제어 발진기는 인덕터(L)와, 제1캐패시터(C4)와, 상기 인덕터와 병렬 접속된 제2캐패시터(C2)와,상기 제2캐패시터와 병렬 접속된 제3캐패시터(C1)와, 상기 제3캐패시터와 접지간에 직렬 접속되며 인가 전압에 따라 캐패시턴스가 가변되는 전압가변 캐패시터(CV)로 이루어진 공진회로(13)와; 상기 제3캐패시터의 일단자가 베이스에 접속되고에미터에 타단자가 접속되어 상기 공진회로(13)와 함께 발진회로를 형성하는 트랜지스터(Q2)와; 송신 및 수신 스위칭 제어신호(TXEN)와 송, 수신 발진 주파수 제어신호(CONT)를 발생하는 제어수단(11)과; 상기 송,수신 스위칭 제어신호가 입력되는 경우만 상기 제1캐패시터(C4)를 상기 인덕터(L)에 병렬 접속시키기 위한 캐패시터 스위칭 수단(12)과; 상기 송, 수신 발진 주파수 제어신호(CONT)와 상기 발진회로의 출력(VCO)에 응답하여 송, 수신 발진주파수에 대응한 입력전압(Vin)을상기 전압가변 캐패시터(CV)로 출력하기 위한 듀얼 주파수 합성기(15)로 구성된다.The capacitor switching voltage controlled oscillator includes an inductor L, a first capacitor C4, a second capacitor C2 connected in parallel with the inductor, and a third capacitor C1 connected in parallel with the second capacitor. A resonant circuit (13) comprising a voltage variable capacitor (C V ) connected in series between the third capacitor and the ground and having a variable capacitance according to an applied voltage; A transistor (Q2) having one end of the third capacitor connected to the base and the other end connected to the emitter to form an oscillation circuit together with the resonance circuit (13); Control means (11) for generating transmission and reception switching control signals (TXEN) and transmission and reception oscillation frequency control signals (CONT); Capacitor switching means (12) for parallel connection of said first capacitor (C4) to said inductor (L) only when said transmission / reception switching control signal is input; In response to the transmission and reception oscillation frequency control signal CONT and the output V CO of the oscillation circuit, an input voltage Vin corresponding to the transmission and reception oscillation frequency is output to the voltage variable capacitor C V. It consists of a dual frequency synthesizer 15.

Description

캐패시터 스위칭 전압제어 발진기Capacitor Switching Voltage Controlled Oscillators

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 본 발명에 따른 캐패시터 스위칭 전압제어발진기의 블록도, 제4도는 제2도에 도시된 본 발명의 상세회로도이다.2 is a block diagram of a capacitor switching voltage controlled oscillator according to the present invention, and FIG. 4 is a detailed circuit diagram of the present invention shown in FIG.

Claims (4)

인덕터(L)와, 제1캐패시터(C4)와, 상기 인덕터와 병렬 접속된 제2캐패시터(C2)와, 상기 제2캐패시터와 병렬 접속된 제3캐패시터(C1)와, 상기 제3캐패시터와 접지간에 직렬 접속되며 인가 전압에 따라 캐패시턴스가 가변되는 전압가변 캐패시터(CV)로 이루어진 공진회로(13)와; 상기 제3캐패시터의 일단자가 베이스에 접속되고 에미터에 타단자가 접속되어 상기 공진회로와 함께 발진회로를 형성하는 트랜지스터(Q2)와; 송신 및 수신 스위칭 제어신호(TXEN)와 송, 수신 발진주파수 제어신호(CONT)를 발생하는 제어수단(11)과; 상기 송,수신 스위칭 제어신호가 입력되는 경우만 상기 제1캐패시터(C4)를 상기 인덕터(L)에 병렬 접속시키기 위한 캐패시터 스위칭 수단(12)과; 상기 송, 수신 발진 주파수 제어신호(CONT)와 상기 발진회로의 출력(VCO)에 응답하여 송, 수신 발진주파수에 대응한 입력전압(Vin)을 상기 전압가변 캐패시터(CV)로출력하기 위한 듀얼 주파수 합성기(15)로 구성되는 것을 특징으로 하는 캐패시터 스위칭 전압제어 발진기.Inductor L, first capacitor C4, second capacitor C2 connected in parallel with the inductor, third capacitor C1 connected in parallel with the second capacitor, and the third capacitor and ground A resonant circuit 13 made of a voltage variable capacitor C V connected in series and having a variable capacitance according to an applied voltage; A transistor (Q2) having one end of the third capacitor connected to the base and the other end connected to the emitter to form an oscillation circuit together with the resonance circuit; Control means (11) for generating transmission and reception switching control signals (TXEN) and transmission and reception oscillation frequency control signals (CONT); Capacitor switching means (12) for parallel connection of said first capacitor (C4) to said inductor (L) only when said transmission / reception switching control signal is input; In response to the transmission and reception oscillation frequency control signal CONT and the output V CO of the oscillation circuit, an output voltage Vin corresponding to the transmission and reception oscillation frequency is output to the voltage variable capacitor C V. Capacitor switching voltage controlled oscillator, characterized in that consisting of a dual frequency synthesizer (15). 제1항에 있어서, 상기 듀얼 주파수 합성기(15)후단에 입력전압(Vin)의 고주파 성분을 바이패스 시키기 위한 저역통과필터(16)를 더 포함하는 것을 특징으로 하는 캐패시터 스위칭 전압제어 발진기.The oscillator according to claim 1, further comprising a low pass filter (16) for bypassing the high frequency component of the input voltage (Vin) after the dual frequency synthesizer (15). 제1항에 있어서, 상기 송, 수신 스위칭 제어신호는 송신시에 출력되는 것을 특징으로 하는 캐패시터 스위칭 전압제어 발진기.The oscillator of claim 1, wherein the transmission and reception switching control signals are output at the time of transmission. 제1항에 있어서, 상기 캐패시터 스위칭 수단(12)은 상기 송수신 스위칭 제어신호가 베이스에 인가되고, 콜렉터에 상기 제1캐패시터(C4)와 저항(R3)이 접속된 PNP형 캐패시터(Q1)와, 상기 송수신 스위칭 제어신호가 저항(R4)을 통해 애노드에 인가되고 캐소드가 상기 PNP형 트랜지스터의 콜렉터에 접속된 스위칭 다이오드(DI)로 구성되는 것을 특징으로 하는 스위칭 전압제어 발진기.2. The capacitor switching device of claim 1, wherein the capacitor switching means 12 includes a PNP type capacitor Q1 to which the transmission / reception switching control signal is applied to a base, and the first capacitor C4 and the resistor R3 are connected to a collector; And a switching diode (DI) connected to the anode via a resistor (R4) and a cathode connected to a collector of the PNP type transistor. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940032893A 1994-12-06 1994-12-06 Capacitor switching voltage controlled oscillator KR0137913B1 (en)

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KR0137913B1 KR0137913B1 (en) 1998-06-15

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100385588B1 (en) * 2000-08-25 2003-05-27 삼성전기주식회사 Voltage Control Oscillator for transmitting/receiving type
KR100414924B1 (en) * 1998-12-22 2004-02-14 서창전기통신 주식회사 Radio frequency transmission and reception system using voltage control diode
US7688155B2 (en) 2006-07-31 2010-03-30 Electronics And Telecommunications Research Institute Variable capacitor circuit having linear capacitance variation and voltage controlled oscillator using the same
KR20160083275A (en) * 2014-12-30 2016-07-12 중앙대학교 산학협력단 Sensor using micro structure

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5758100A (en) * 1996-07-01 1998-05-26 Sun Microsystems, Inc. Dual voltage module interconnect
JP3548819B2 (en) 1999-10-29 2004-07-28 株式会社村田製作所 Frequency switching type oscillator and electronic equipment using the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100414924B1 (en) * 1998-12-22 2004-02-14 서창전기통신 주식회사 Radio frequency transmission and reception system using voltage control diode
KR100385588B1 (en) * 2000-08-25 2003-05-27 삼성전기주식회사 Voltage Control Oscillator for transmitting/receiving type
US7688155B2 (en) 2006-07-31 2010-03-30 Electronics And Telecommunications Research Institute Variable capacitor circuit having linear capacitance variation and voltage controlled oscillator using the same
KR20160083275A (en) * 2014-12-30 2016-07-12 중앙대학교 산학협력단 Sensor using micro structure

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