KR880002317A - Multiband Oscillator - Google Patents

Multiband Oscillator Download PDF

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Publication number
KR880002317A
KR880002317A KR1019870008077A KR870008077A KR880002317A KR 880002317 A KR880002317 A KR 880002317A KR 1019870008077 A KR1019870008077 A KR 1019870008077A KR 870008077 A KR870008077 A KR 870008077A KR 880002317 A KR880002317 A KR 880002317A
Authority
KR
South Korea
Prior art keywords
alternatingly
oscillation transistor
collector
turned
receiving
Prior art date
Application number
KR1019870008077A
Other languages
Korean (ko)
Other versions
KR910001371B1 (en
Inventor
사다히로 오오야마
가즈오 고바야시
시게루 다까사끼
나오도시 시무라
Original Assignee
모리베 하지메
미쓰미 덴끼 가부시끼가이샤
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 모리베 하지메, 미쓰미 덴끼 가부시끼가이샤 filed Critical 모리베 하지메
Publication of KR880002317A publication Critical patent/KR880002317A/en
Application granted granted Critical
Publication of KR910001371B1 publication Critical patent/KR910001371B1/en

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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
    • H03B5/20—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
    • H03B5/24—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 active element in amplifier being semiconductor device
    • 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

Landscapes

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

Abstract

내용 없음No content

Description

다밴드 발진회로Multiband Oscillator

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

제1도는 본 발명의 일실시예에 관한 발진회로가 적용되는 다밴드 튜우너의 회로블로도.1 is a circuit block diagram of a multi-band tuner to which an oscillation circuit according to an embodiment of the present invention is applied.

제2도는 본 발명의 일실시예에 관한 발진회로를 포함한 제1도의 블록도의 구체적인 회로도.2 is a detailed circuit diagram of the block diagram of FIG. 1 including an oscillation circuit according to an embodiment of the present invention.

제3도는 제2도의 발진회로의 변형예에 관한 회로도.3 is a circuit diagram according to a modification of the oscillation circuit of FIG.

Claims (1)

제1및 제2대역을 수신하는 다밴드 튜우너의 콜피츠형의 발진회로에 있어서, 발진 트랜지스터의 콜렉터, 에미터사이에 교류적으로 접속된 콘덴서 및 제1스위칭 다이오드와, 이 발진트랜지스터의 베이스와 콜렉터 사이에 교류적으로 접속된 코일 및 제2스위칭 다이오드와, 이발진 트랜지스트의 베이스와 콜렉터 사이의 교류적으로 접속된 공진선로 및 가변용량 다이오드로 이루어지고, 이 제1대역 수신시에는 이 제1및 제2스위칭 다이오드가 오프되고, 이 제2대역 수신시에는 이들 제1및 제2다이오드가 온되도록 구성된 것을 특징으로 하는 다밴드 발진회로.In the Colpitz-type oscillation circuit of a multi-band tuner for receiving first and second bands, a capacitor and a first switching diode connected alternatingly between a collector and an emitter of an oscillation transistor, the base of the oscillation transistor, It consists of a coil and a second switching diode alternatingly connected between the collectors, a resonant line and a variable capacitance diode connected alternatingly between the base and the collector of the oscillation transistor. And the first and second switching diodes are turned off, and the first and second diodes are configured to be turned on upon receiving the second band. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019870008077A 1986-07-31 1987-07-24 Multi-band oscillator circuit KR910001371B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP180729 1986-07-31
JP61180729A JPH07120966B2 (en) 1986-07-31 1986-07-31 Multi-band oscillator circuit

Publications (2)

Publication Number Publication Date
KR880002317A true KR880002317A (en) 1988-04-30
KR910001371B1 KR910001371B1 (en) 1991-03-04

Family

ID=16088282

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019870008077A KR910001371B1 (en) 1986-07-31 1987-07-24 Multi-band oscillator circuit

Country Status (2)

Country Link
JP (1) JPH07120966B2 (en)
KR (1) KR910001371B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100434855B1 (en) * 2002-07-24 2004-06-07 엘지이노텍 주식회사 Vhf voltage control oscillation circuit and tuner capable of receiving two band using the same

Also Published As

Publication number Publication date
JPS6337719A (en) 1988-02-18
JPH07120966B2 (en) 1995-12-20
KR910001371B1 (en) 1991-03-04

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