KR970031409A - Transceiver with Voltage Controlled Oscillator - Google Patents
Transceiver with Voltage Controlled Oscillator Download PDFInfo
- 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
- Authority
- KR
- South Korea
- Prior art keywords
- transceiver
- controlled oscillator
- electronic switch
- resonant circuit
- voltage controlled
- Prior art date
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- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
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
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)
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 |
Family
ID=66588535
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) |
-
1995
- 1995-11-22 KR KR1019950042999A patent/KR970031409A/en not_active Application Discontinuation
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
WITB | Written withdrawal of application |