KR900011139A - 튜너의 혼합단 제어용 발진기 - Google Patents

튜너의 혼합단 제어용 발진기 Download PDF

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Publication number
KR900011139A
KR900011139A KR1019890018708A KR890018708A KR900011139A KR 900011139 A KR900011139 A KR 900011139A KR 1019890018708 A KR1019890018708 A KR 1019890018708A KR 890018708 A KR890018708 A KR 890018708A KR 900011139 A KR900011139 A KR 900011139A
Authority
KR
South Korea
Prior art keywords
transistor
base
tuner
control signal
collector
Prior art date
Application number
KR1019890018708A
Other languages
English (en)
Inventor
하슬러 루돌프
Original Assignee
프레데릭 얀 스미트
엔.브이.필립스 글로아이람 펜파브리켄
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 프레데릭 얀 스미트, 엔.브이.필립스 글로아이람 펜파브리켄 filed Critical 프레데릭 얀 스미트
Publication of KR900011139A publication Critical patent/KR900011139A/ko

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • 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
    • 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
    • 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

  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

내용 없음

Description

튜너의 혼합단 제어용 발진기
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제 1도는 발진기의 미세한 튜너를 가능하게 하기 위해 가변 캐패시턴스를 가지며, 상기 캐패시턴스는 미세한 동조 제어 신호에 의존하여 변화 가능하며 튜너의 혼합단 제어용으로 적당한 발진기 회로 다이어그램, 제 2도는 가변 캐패시턴스를 제어하는 미세한 튜너 제어신호 변화를 설명하기 위한 다이어그램, 제 3도는 상기 캐패시턴스는 제 2도에 도시된 미세한 튜너 제어신호에 의존하여 변화 가능하며, 트랜지스터의 콜렉터 회로에서 발생하는 캐패시턴스 변화의 다이어그램.

Claims (2)

  1. 트랜지스터의 콜렉터 회로에서 발생하는 캐패시턴스에 의해 구성되고, 미세한 튜너 동조 제어 신호에 의하여 변화되며, 상기 트랜지스터의 리드의 쌍에 공급된 미세한 튜너 제어 신호에 의해 변화 가능한 가변 캐패시턴스를 포함한 병렬 공진 회로를 구비하는 튜너의 혼합단 제어용 발진기에 있어서, 상기 트랜지스터는 별개의 트랜지스터에 의해 구성되며, 상기 별개의 트랜지스터의 콜렉터는 병렬 공진 회로에 용량성으로 연결되며, 베이스 및 에미터는 교류 전류를 위하여 그라운드에 접속되며, 상기 트랜지스터 동작점은 베이스-에미터 다이오드 및 베이스 콜렉터 다이오드 2개가 순방향 바이어스 되도록 선택되며, 상기 미세한 튜너 제어신호는 상기 트랜지스터의 베이스-에미터 통로에 공급되며 트랜지스터 제어 범위내의 미세한 튜너 제어 신호는 한편으로는 베이스-콜렉터 다이오드를 한층 더 전도 상태로 구동시키며 다른 한편으로는 차단 영역으로 구동시키는 것을 특징으로 하는 튜너의 혼합단 제어용 발진기.
  2. 제 1항에 있어서, 상기 미세한 튜너 제어신호는 RC소자를 통해 트랜지스터으 베이스-에미터 통로에 공급되며, 트랜지스터 제어 범위내의 미세한 튜너 제어 신호에 의해, 상기 베이스-콜렉터 다이오드는 한편으로 베이스 에미터 통로에 발생된 전압 즉 베이스 콜렉터 다이오드에 존재하는 전압이 상기 트랜지스터 베이스-에미터 통로 임피던스와 상호 작용하는 RC소자의 레지스턴스에 의해 얻을 수 있는 최대값 이새로 제한될때까지 전도상태로 구동이 되며 상기 베이스 콜렉터 다이오드는 다른 한편으로 캐패시턴스가 본질적으로 더 이상 변화되지 않을때까지 차단 영역으로 구동되는 것을 특징으로 하는 튜너의 혼합단 제어용 발진기.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019890018708A 1988-12-19 1989-12-16 튜너의 혼합단 제어용 발진기 KR900011139A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0308188A AT391965B (de) 1988-12-19 1988-12-19 Oszillator zur anspeisung einer mischstufe in einem tuner
ATA3081/88 1988-12-19

Publications (1)

Publication Number Publication Date
KR900011139A true KR900011139A (ko) 1990-07-11

Family

ID=3545036

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890018708A KR900011139A (ko) 1988-12-19 1989-12-16 튜너의 혼합단 제어용 발진기

Country Status (5)

Country Link
US (1) US5004989A (ko)
EP (1) EP0375034A3 (ko)
JP (1) JPH02217004A (ko)
KR (1) KR900011139A (ko)
AT (1) AT391965B (ko)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2290916A (en) * 1994-06-24 1996-01-10 Plessey Semiconductors Ltd Tunable oscillator arrangement
DE19530544A1 (de) * 1995-08-19 1997-02-20 Telefunken Microelectron Verfahren zur Resonanzkreisabstimmung durch Veränderung der Speisespannung einer Kapazitätsdiode
US5721515A (en) * 1996-08-29 1998-02-24 Rf Monolithics, Inc. High stability single-port saw resonator oscillator
KR100242415B1 (ko) * 1996-11-28 2000-02-01 윤종용 2차 국부발진회로

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL196121A (ko) * 1954-03-31
GB1049754A (en) * 1963-08-03 1966-11-30 Pye Ltd Transistor controlled oscillator
US3535656A (en) * 1968-09-27 1970-10-20 Bendix Corp Voltage controlled solid state circuit
US4034298A (en) * 1975-10-17 1977-07-05 General Electric Company Cascode FM tuner for a radio receiver
JPS5360538A (en) * 1976-11-12 1978-05-31 Hitachi Ltd Tuning circuit of variable capacity type
DE3326382A1 (de) * 1983-07-22 1985-01-31 Siemens AG, 1000 Berlin und 8000 München Nachstimmbarer lc-oszillator mit spannungsgesteuerter reaktanz

Also Published As

Publication number Publication date
US5004989A (en) 1991-04-02
ATA308188A (de) 1990-06-15
EP0375034A3 (de) 1990-11-28
JPH02217004A (ja) 1990-08-29
AT391965B (de) 1990-12-27
EP0375034A2 (de) 1990-06-27

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