KR970031409A - Transceiver with Voltage Controlled Oscillator - Google Patents

Transceiver with Voltage Controlled Oscillator Download PDF

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Publication number
KR970031409A
KR970031409A KR1019950042999A KR19950042999A KR970031409A KR 970031409 A KR970031409 A KR 970031409A KR 1019950042999 A KR1019950042999 A KR 1019950042999A KR 19950042999 A KR19950042999 A KR 19950042999A KR 970031409 A KR970031409 A KR 970031409A
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KR
South Korea
Prior art keywords
transceiver
controlled oscillator
electronic switch
resonant circuit
voltage controlled
Prior art date
Application number
KR1019950042999A
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Korean (ko)
Inventor
송석찬
Original Assignee
이형도
삼성전기 주식회사
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 이형도, 삼성전기 주식회사 filed Critical 이형도
Priority to KR1019950042999A priority Critical patent/KR970031409A/en
Publication of KR970031409A publication Critical patent/KR970031409A/en

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Abstract

본 발명은 휴대폰, 무선전화기등에 구비되며, 스위칭제어신호에 따라서 송신용 발진신호와 수신용 발진신호를 출력하는 송수신겸용 전압제어발진기를 구비하여 구성이 간소화된 송수신기에 관한 것으로, 상기 송수신겸용 전압제어발진기는 입력되는 튜닝전압에 의하여 공진하는 공진회로와, 상기 공진회로에서 동조된 주파수신호를 증폭하여 출력하는 증폭회로와, 상기 증폭회로와 공진회로사이에 구비되어 스위칭 동작에 따라 캐패시턴스값을 변화시킴으로써 공진회로에서 동조되는 주파수를 변화시키는 발진주파수선택부를 구비한다.The present invention relates to a transceiver which is provided in a cellular phone, a wireless telephone, etc., and has a simplified transmission / reception voltage controlled oscillator for outputting a transmission oscillation signal and a reception oscillation signal according to a switching control signal. The oscillator is provided between a resonant circuit resonating by an input tuning voltage, an amplifying circuit for amplifying and outputting a frequency signal tuned by the resonant circuit, and being provided between the amplifying circuit and the resonant circuit to change capacitance values according to a switching operation. An oscillation frequency selector for varying the frequency tuned in the resonant circuit is provided.

Description

송수신겸용 전압제어발진기를 구비한 송수신기Transceiver with Voltage Controlled Oscillator

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

제2도는 본 발명에 의한 송수신기의 구성을 보여주는 블럭도이고, 제3도는 제2도의 전압제어발진기의 일실시예에 의한 회로도이다.2 is a block diagram showing the configuration of a transceiver according to the present invention, and FIG. 3 is a circuit diagram according to an embodiment of the voltage controlled oscillator of FIG.

Claims (3)

송수신겸용 전압제어발진기를 구비한 송수신기에 있어서, 상기 송수신겸용 전압제어발진기가 입력되는 튜닝전압에 의하여 소정의 주파수로 동조하는 공진회로와, 상기 공진회로로부터 발생된 주파수의 발진신호를 증폭하여 출력하는 증폭회로와, 상기 공진회로와 증폭회로의 사이에 구비되고 스위칭신호입력단으로부터 입력되는 신호에 따라 동조주파수를 변화시키는 발진주파수선택부를 구비함을 특징으로 하는 송수신겸용 전압제어발진기를 구비한 송수신기.A transceiver comprising a voltage controlled oscillator for both transmission and reception, comprising: amplifying and outputting a resonant circuit tuned to a predetermined frequency by a tuning voltage inputted by the transceiver; And an oscillation frequency selection unit provided between the amplification circuit and the resonance circuit and the amplification circuit, the oscillation frequency selection unit changing a tuning frequency according to a signal input from a switching signal input terminal. 제1항에 있어서, 상기 발진주파수선택부가 상기 공진회로에 병렬연결되는 콘덴서와, 상기 콘덴서에 병렬로 연결되는 전자스위치와, 상기 전자스위치와 접지사이에 구비되는 콘덴서와, 상기 전자스위치의 스위칭동작을 제어하는 스위칭신호입력단을 구비함을 특징으로 하는 송수신겸용 전압제어발진기를 구비한 송수신기.The switching operation of the electronic switch according to claim 1, wherein the oscillation frequency selection unit includes a capacitor connected in parallel to the resonance circuit, an electronic switch connected in parallel to the capacitor, a capacitor provided between the electronic switch and ground, and a switching operation of the electronic switch. Transceiver having a voltage-controlled oscillator for both transmitting and receiving, characterized in that it comprises a switching signal input terminal for controlling the. 제2항에 있어서, 상기 전자스위치가 스위칭다이오드임을 특징으로 하는 송수신기용 전압제어발진기.3. The voltage controlled oscillator of claim 2, wherein the electronic switch is a switching diode. ※ 참고사항:최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950042999A 1995-11-22 1995-11-22 Transceiver with Voltage Controlled Oscillator KR970031409A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950042999A KR970031409A (en) 1995-11-22 1995-11-22 Transceiver with Voltage Controlled Oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950042999A KR970031409A (en) 1995-11-22 1995-11-22 Transceiver with Voltage Controlled Oscillator

Publications (1)

Publication Number Publication Date
KR970031409A true KR970031409A (en) 1997-06-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950042999A KR970031409A (en) 1995-11-22 1995-11-22 Transceiver with Voltage Controlled Oscillator

Country Status (1)

Country Link
KR (1) KR970031409A (en)

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