KR910008945A - IC signal tuner input signal stabilization circuit - Google Patents

IC signal tuner input signal stabilization circuit Download PDF

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Publication number
KR910008945A
KR910008945A KR1019900016415A KR900016415A KR910008945A KR 910008945 A KR910008945 A KR 910008945A KR 1019900016415 A KR1019900016415 A KR 1019900016415A KR 900016415 A KR900016415 A KR 900016415A KR 910008945 A KR910008945 A KR 910008945A
Authority
KR
South Korea
Prior art keywords
signal
vhf
tuner
bandpass filter
uhf
Prior art date
Application number
KR1019900016415A
Other languages
Korean (ko)
Other versions
KR950012950B1 (en
Inventor
이기룡
Original Assignee
서주인
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.)
Filing date
Publication date
Application filed by 서주인, 삼성전기 주식회사 filed Critical 서주인
Priority to KR1019900016415A priority Critical patent/KR950012950B1/en
Priority to JP28569790A priority patent/JPH03208417A/en
Publication of KR910008945A publication Critical patent/KR910008945A/en
Application granted granted Critical
Publication of KR950012950B1 publication Critical patent/KR950012950B1/en

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/0153—Electrical filters; Controlling thereof
    • H03H7/0161—Bandpass filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/06—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges
    • H03J3/08—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges by varying a second parameter simultaneously with the tuning, e.g. coupling bandpass filter

Landscapes

  • Superheterodyne Receivers (AREA)
  • Circuits Of Receivers In General (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

내용 없음No content

Description

IC 튜너의 입력신호 안정화 회로IC signal tuner input signal stabilization circuit

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

제2도는 본 발명의 개략적인 회로 구성도2 is a schematic circuit diagram of the present invention

제3도는 본 발명의 한 실시예를 도시한 상세회로 구성도3 is a detailed circuit diagram showing an embodiment of the present invention.

제4도는 본 발명의 타 실시예를 도시한 상세회로 구성도4 is a detailed circuit diagram showing another embodiment of the present invention.

Claims (4)

RF 증폭기와 국부발진기, 믹서, 대역통과 필터 및 IF 증폭기를 포함하는 IC 튜너 회로에 있어서, 상기 IC튜너의 전단에 각 수신신호 대역별로 구성하거나, 가변동조 회로를 구성한 밴드패스 필터부를 구비하고, 상기 밴드패스 필터와 자동이득 조절기로부터 신호를 받아 광대역에서 강,약 수신신호를 제어신호로서 자동이득을 제어하는 저잡음 증폭부로 이루어진 것을 특징으로 하는 IC 튜너의 입력신호 안정화 회로.An IC tuner circuit including an RF amplifier, a local oscillator, a mixer, a band pass filter, and an IF amplifier, comprising: a band pass filter unit configured for each received signal band or a variable tuning circuit in front of the IC tuner; An IC tuner input signal stabilization circuit comprising a low noise amplifier which receives signals from a band pass filter and an automatic gain regulator and controls the automatic gain of a strong or weak received signal as a control signal over a wide band. 제1항에 있어서, 상기한 밴드패스 필터부와 저잡음 증폭부는 안테나로부터 입력되는 방송신호의 불요신호를 제거하는 UHF 밴드패스 필터와, 상기 UHF 밴드패스 필터의 소망하는 출력신호를 일정 레벨로 증폭시켜 IC 튜너로 출력하는 UHF 증폭기와, VHF 로우밴드의 신호를 수신하여 불요신호를 제거하는 VHF 로우밴드 필터와,VHF 하이밴드의 신호를 수신하여 불요 신호를 제거하는 VHF 하이밴드패스필터와, 상기 VHF 로우/하이 밴드패스 필터의 출력신호를 일정레벨로 증폭시켜 소망하는 신호를 IC 튜너로 출력하는 VHF증폭기와로 이루어진것을 특징으로 하는 IC 튜너의 입력신호 안정화 회로.2. The apparatus of claim 1, wherein the bandpass filter unit and the low noise amplifier unit amplify a desired output signal of the UHF bandpass filter and a UHF bandpass filter for removing an unnecessary signal of a broadcast signal input from an antenna. A UHF amplifier output to an IC tuner, a VHF lowband filter receiving a VHF lowband signal to remove unwanted signals, a VHF highbandpass filter receiving a VHF highband signal to remove unwanted signals, and the VHF An IC tuner input signal stabilization circuit comprising a VHF amplifier which amplifies the output signal of a low / high bandpass filter to a predetermined level and outputs a desired signal to the IC tuner. 제1항에 있어서, 상기한 밴드패스 필터와 저잡음 증폭부는 UHF 신호를 수신하여 불요신호를 제거하는 UHF 가변동조형 밴드패스 필터와, VHF 신호를 수신하여 불요신호를 제거하는 VHF 가변동조형 밴드패스 필터와, 상기 UHF/VHF 가변동조형 밴드패스 필터의 출력신호를 소망하는 레벨로 증폭시켜 IC 튜너로 출력하는 UHF/VHF 광대역 증폭기와로 이루어진 것을 특징으로 하는 IC 튜너의 입력신호 안정화 회로.2. The tunable bandpass filter of claim 1, wherein the bandpass filter and the low noise amplifier receive a UHF signal to remove an unnecessary signal, and the VHF tunable bandpass filter that receives a VHF signal to remove an unnecessary signal. And a UHF / VHF wideband amplifier which amplifies the output signal of the UHF / VHF variable-tuned bandpass filter to a desired level and outputs the IC signal to an IC tuner. 제3항에 있어서, 상기 UHF/VHF 가변동조형 밴드패스 필터에 공급되는 동조 전압(VT)은 IC 튜너의 국부발진기와 주파수적으로 매칭이 이루어지도록 한 것을 특징으로 하는 IC 튜너의 입력신호 안정화 회로.[4] The IC tuner input signal stabilization of claim 3, wherein the tuning voltage V T supplied to the UHF / VHF variable tuning bandpass filter is matched in frequency with the local oscillator of the IC tuner. Circuit. ※참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is to be disclosed based on the initial application.
KR1019900016415A 1989-10-24 1990-10-16 Stabilization circuit of input signal for ic tunor KR950012950B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1019900016415A KR950012950B1 (en) 1989-10-24 1990-10-16 Stabilization circuit of input signal for ic tunor
JP28569790A JPH03208417A (en) 1989-10-24 1990-10-23 Input signal stable circuit of ic tuner

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR89-15266 1989-10-24
KR1019890015266A KR910008948A (en) 1989-10-24 1989-10-24 IC signal tuner input signal stabilization circuit
KR1019900016415A KR950012950B1 (en) 1989-10-24 1990-10-16 Stabilization circuit of input signal for ic tunor

Publications (2)

Publication Number Publication Date
KR910008945A true KR910008945A (en) 1991-05-31
KR950012950B1 KR950012950B1 (en) 1995-10-23

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Family Applications (2)

Application Number Title Priority Date Filing Date
KR1019890015266A KR910008948A (en) 1989-10-24 1989-10-24 IC signal tuner input signal stabilization circuit
KR1019900016415A KR950012950B1 (en) 1989-10-24 1990-10-16 Stabilization circuit of input signal for ic tunor

Family Applications Before (1)

Application Number Title Priority Date Filing Date
KR1019890015266A KR910008948A (en) 1989-10-24 1989-10-24 IC signal tuner input signal stabilization circuit

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Also Published As

Publication number Publication date
KR950012950B1 (en) 1995-10-23
KR910008948A (en) 1991-05-31

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