KR970013635A - 가변 리액턴스 회로 - Google Patents

가변 리액턴스 회로 Download PDF

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Publication number
KR970013635A
KR970013635A KR1019960035501A KR19960035501A KR970013635A KR 970013635 A KR970013635 A KR 970013635A KR 1019960035501 A KR1019960035501 A KR 1019960035501A KR 19960035501 A KR19960035501 A KR 19960035501A KR 970013635 A KR970013635 A KR 970013635A
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KR
South Korea
Prior art keywords
bipolar transistor
collector
input terminal
power supply
input
Prior art date
Application number
KR1019960035501A
Other languages
English (en)
Other versions
KR100197842B1 (ko
Inventor
아츠시 오가와
츠네유키 무라야마
Original Assignee
니시무로 타이조
가부시기가이샤 도시바
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.)
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Publication date
Application filed by 니시무로 타이조, 가부시기가이샤 도시바 filed Critical 니시무로 타이조
Publication of KR970013635A publication Critical patent/KR970013635A/ko
Application granted granted Critical
Publication of KR100197842B1 publication Critical patent/KR100197842B1/ko

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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
    • H03B5/1206—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 using multiple transistors for amplification
    • H03B5/1209—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 using multiple transistors for amplification the amplifier having two current paths operating in a differential manner and a current source or degeneration circuit in common to both paths, e.g. a long-tailed pair.
    • 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
    • H03B5/1206—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 using multiple transistors for amplification
    • H03B5/1221—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 using multiple transistors for amplification the amplifier comprising multiple amplification stages connected in cascade
    • 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
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/46—One-port networks
    • H03H11/48—One-port networks simulating reactances
    • 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
    • H03B2200/006—Functional aspects of oscillators
    • H03B2200/0082—Lowering the supply voltage and saving power
    • 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

Landscapes

  • Networks Using Active Elements (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

전원 전압이 1V정도의 매우 낮은 전압 조건하에서도 정상적으로 동작할 수 있는 가변 리액턴스 회로를 제공한다. 입력 단자(IN)에 인가되는 입력 신호가 용량 소자(CI)를 통해 에미터에 인가되는 트랜지스터(NI)를 갖는 증폭회로(21)와, 각각 증폭 회로의 출력 신호가 한쪽의 베이스에 입력하고 다른쪽의 베이스에 소정의 바이어스가 인가되는 차동쌍 트랜지스터의 한쪽 콜렉터가 전원 노드에 접속되고, 다른쪽 콜렉터가 입력 단자에 접속된 2개의 차동회로(22,23)와, 각 차동 회로의 에미터 공통 접속점과 접지 노드와의 사이에 각각 접속되며, 외부로부터의 제어 신호에 이해서 전류치 및 그 대소관계가 변화하도록 제어되는 2개의 가변 전류원(Iv1, Iv2)을 구비한다.

Description

가변 리액턴스 회로
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
도 1은 본 발명의 가변 리액턴스 회로의 제1실시예를 사용한 VCO를 도시하는 회로도.

Claims (1)

  1. 입력 신호가 인가되는 입력 단자(IN)와; 상기 입력 단자에 일단이 접속된 용량 소자(C1)와; 상기 용량 소자를통해 상기 입력 단자의 입력 신호가 에미터에 인가되는 바이폴라 트랜지스터를 가지며, 상기 입력 신호를 증폭하여 출력하는 저입력 임피던스형 증폭 회로(21)와; 상기 증폭 회로의 출력 신호가 한쪽의 베이스에 입력하고, 다른쪽의 베이스에 소정의 바이어스가 인가되는 제1 차동쌍을 이루는 바이폴라 트랜지스터를 가지며, 한쪽의 바이폴라 트랜지스터의 콜렉터가 전원 노드에 접속되고, 다른쪽의 바이폴라 트랜지스터의 콜렉터가 상기 입력 단자에 접속된 제 1차동 회로(22)와; 상기 증폭 회로의 출력 신호가 한쪽의 베이스에 입력하고, 다른쪽의 베이스에 상기 소정의 바이어스가 인가되는 제2 차동쌍을 이루는 바이폴라 트랜지스터를 가지며, 한쪽의 바이폴라 트랜지스터의 콜렉터가 상기 입력 단자에 접속되고, 다른쪽의 바이폴라 트랜지스터의 콜렉터가 전원 노드에 접속된 제2 차동 회로(23)와; 상기 제1 차동쌍을 이루는 바이폴라 트랜지스터의 에미터 공통 접속점과 접지 노드와의 사이에 접속되고, 외부로부터의 제어 신호에 의해서 전류치가 제어되는 제1 가변 전류원(Iv1)과; 상기 제2 차동을 이루는 바이폴라 트랜지스터의 에미터 공통 접속점과 접지 노드와의 사이에 접속되고, 외부로부터의 제어 신호에 의해서 전류치가 제어됨과 동시에 상기 제1 가변 전류원의 전류치와의 대소관계가 변화하도록 제어되는 제2 가변 전류원(Iv2)을 구비하는 것을 특징으로 하는 리액턴스 회로.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019960035501A 1995-08-28 1996-08-26 가변 리액턴스 회로 KR100197842B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP95-219020 1995-08-28
JP21902095A JP3360983B2 (ja) 1995-08-28 1995-08-28 可変リアクタンス回路および電圧可変発振回路

Publications (2)

Publication Number Publication Date
KR970013635A true KR970013635A (ko) 1997-03-29
KR100197842B1 KR100197842B1 (ko) 1999-06-15

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ID=16729000

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960035501A KR100197842B1 (ko) 1995-08-28 1996-08-26 가변 리액턴스 회로

Country Status (4)

Country Link
US (1) US5815044A (ko)
JP (1) JP3360983B2 (ko)
KR (1) KR100197842B1 (ko)
TW (1) TW321802B (ko)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0030694D0 (en) 2000-12-15 2001-01-31 Nokia Mobile Phones Ltd An electronic circuit supplied with power via current generator means
KR102059276B1 (ko) * 2018-11-14 2019-12-24 숭실대학교산학협력단 가변저항을 이용한 리액턴스 가변 장치 및 이의 제어방법

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59103409A (ja) * 1982-12-03 1984-06-14 Toshiba Corp カレントミラ−回路
JPH0691413B2 (ja) * 1989-03-20 1994-11-14 株式会社東芝 リアクタンス制御回路

Also Published As

Publication number Publication date
JP3360983B2 (ja) 2003-01-07
KR100197842B1 (ko) 1999-06-15
US5815044A (en) 1998-09-29
JPH0964692A (ja) 1997-03-07
TW321802B (ko) 1997-12-01

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