KR950022200A - Local Oscillation Circuit of Wireless Pager with Temperature Compensation - Google Patents

Local Oscillation Circuit of Wireless Pager with Temperature Compensation Download PDF

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Publication number
KR950022200A
KR950022200A KR1019930029714A KR930029714A KR950022200A KR 950022200 A KR950022200 A KR 950022200A KR 1019930029714 A KR1019930029714 A KR 1019930029714A KR 930029714 A KR930029714 A KR 930029714A KR 950022200 A KR950022200 A KR 950022200A
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KR
South Korea
Prior art keywords
oscillation circuit
local oscillation
trimmer capacitor
compensating element
present
Prior art date
Application number
KR1019930029714A
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Korean (ko)
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KR960012955B1 (en
Inventor
김재성
Original Assignee
정장호
금성정보통신 주식회사
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Priority to KR1019930029714A priority Critical patent/KR960012955B1/en
Publication of KR950022200A publication Critical patent/KR950022200A/en
Application granted granted Critical
Publication of KR960012955B1 publication Critical patent/KR960012955B1/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
    • H03B5/02—Details
    • H03B5/04—Modifications of generator to compensate for variations in physical values, e.g. power supply, load, temperature
    • 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
    • H03B2200/0002—Types of oscillators
    • H03B2200/0008—Colpitts oscillator

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  • Oscillators With Electromechanical Resonators (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

본 발명은 무선선택 호출수신기의 국부 발진회로에 관한 것으로, 특히 온도보상 특성을 갖는 국부발진 회로에 관한 것이다.The present invention relates to a local oscillation circuit of a radio selective call receiver, and more particularly to a local oscillation circuit having a temperature compensation characteristic.

본 발명은 수정발진자와 직렬 접속된 트리미 콘덴서를 구비한 콜피츠형 발진 회로에 있어서, 상기 트리머콘덴서와 병렬 접속되어 안정화 전원의 출력 전압의 변화에 따라 용량이 변하는 온도보상 소자를 더 포함하는 것을 제공한다.The present invention relates to a Colpitts oscillation circuit having a trimmer capacitor connected in series with a crystal oscillator, further comprising a temperature compensating element connected in parallel with the trimmer capacitor and whose capacitance changes in accordance with a change in the output voltage of the stabilized power supply. to provide.

본 발명은 따라 저온 동작영역에서의 온도특성이 개선된다.According to the present invention, the temperature characteristic in the low temperature operating region is improved.

Description

온도보상 특성을 갖는 무선 호출기의 국부 발진 회로Local Oscillation Circuit of Wireless Pager with Temperature Compensation

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

제1도는 본 발명의 일실시예에 따른 무선호출기의 고주파 처리부의 구성을 나타낸 상세회로도.1 is a detailed circuit diagram showing a configuration of a high frequency processing unit of a pager according to an embodiment of the present invention.

제2도는 본 발명에 따른 국부 발진회로의 수정발진자에 병렬로 접속시킨 용량소자와 국부발진주파수와의 관계를 나타낸 특성 그래프.2 is a characteristic graph showing a relationship between a capacitor and a local oscillation frequency connected in parallel to a crystal oscillator of a local oscillation circuit according to the present invention.

제3도는 본 발명의 바리캡의 부가전압-용량치의 관계를 나타낸 그래프.3 is a graph showing the relationship between the added voltage and the capacitance value of the barrier cap of the present invention.

Claims (3)

수정발진자와 직렬 접속된 트리머 콘덴서를 구비한 콜피츠형 발진회로에 있어서, 상기 트리머 콘덴서와 병렬 접속되어 안정화 전원의 출력 전압의 변화에 따라 용량이 변하는 온도보상 소자를 더 포함하는 것을 특징으로 하는 콜피츠형 발진회로.A Colpitts oscillation circuit having a trimmer capacitor connected in series with a crystal oscillator, the collet-type oscillation circuit further comprising a temperature compensating element connected in parallel with the trimmer capacitor and whose capacitance changes in accordance with a change in the output voltage of the stabilized power supply. Fitz-type oscillation circuit. 제1항에 있어서, 상기 온도 보상소자는 가변용량 다이오드로 구성된 것을 특징으로 하는 콜피츠형 발진회로.The Colpitts oscillation circuit according to claim 1, wherein the temperature compensating element comprises a variable capacitance diode. 제1항에 있어서, 상기 온도 보상소자는 에미터 단자가 오픈되어 있고 콜렉터와 베이스 단자가 상기 트리머콘덴서에 병렬 접속되고 베이스 단자에 저항을 통하여 안정화 전원이 인가되는 트랜지스터로 구성되는 것을 특징으로 하는 콜피츠형 발진회로.2. The call according to claim 1, wherein the temperature compensating element comprises a transistor in which an emitter terminal is open, a collector and a base terminal are connected in parallel to the trimmer capacitor, and a stabilizing power is applied to the base terminal through a resistor. Fitz-type oscillation circuit. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930029714A 1993-12-24 1993-12-24 Local oscillation circuit of paging with the function of temperature compensation character KR960012955B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930029714A KR960012955B1 (en) 1993-12-24 1993-12-24 Local oscillation circuit of paging with the function of temperature compensation character

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930029714A KR960012955B1 (en) 1993-12-24 1993-12-24 Local oscillation circuit of paging with the function of temperature compensation character

Publications (2)

Publication Number Publication Date
KR950022200A true KR950022200A (en) 1995-07-28
KR960012955B1 KR960012955B1 (en) 1996-09-25

Family

ID=19372732

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930029714A KR960012955B1 (en) 1993-12-24 1993-12-24 Local oscillation circuit of paging with the function of temperature compensation character

Country Status (1)

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KR (1) KR960012955B1 (en)

Also Published As

Publication number Publication date
KR960012955B1 (en) 1996-09-25

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