KR970031259A - Adjacent channel trap circuit for intermediate frequency signal - Google Patents

Adjacent channel trap circuit for intermediate frequency signal Download PDF

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Publication number
KR970031259A
KR970031259A KR1019950044675A KR19950044675A KR970031259A KR 970031259 A KR970031259 A KR 970031259A KR 1019950044675 A KR1019950044675 A KR 1019950044675A KR 19950044675 A KR19950044675 A KR 19950044675A KR 970031259 A KR970031259 A KR 970031259A
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KR
South Korea
Prior art keywords
intermediate frequency
adjacent channel
frequency signal
trap circuit
trap
Prior art date
Application number
KR1019950044675A
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Korean (ko)
Inventor
김현진
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 KR1019950044675A priority Critical patent/KR970031259A/en
Publication of KR970031259A publication Critical patent/KR970031259A/en

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Abstract

본 발명은 중간주파신호(IF Signal)에서의 인접채널 트랩회로(Trap Circuit)에 관한 것이다.The present invention relates to an adjacent channel trap circuit in an IF signal.

본 발명은 튜너의 주파수변환부에서 출력되는 중간주파신호에 있어서, 이 중간주파신호에 포함된 인접채널신호를 제거함으로써, 인접채널방해 특성을 양호히 개선하는 효과가 있는 것이다.The present invention has the effect of improving the adjacent channel disturbance characteristics by removing the adjacent channel signal included in the intermediate frequency signal outputted from the frequency converter of the tuner.

Description

중간주파신호에서의 인접채널 트랩회로Adjacent Channel Trap Circuits in Intermediate Frequency Signals

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

제2도는 본 발명에 따른 중간주파신호에서의 인접채널 트랩회로도.2 is an adjacent channel trap circuit diagram of an intermediate frequency signal according to the present invention.

제3도는 본 발명과 종래의 중간주파신호를 비교하기 위한 파형도.3 is a waveform diagram for comparing the present invention and a conventional intermediate frequency signal.

Claims (3)

중간주파신호를 출력하는 주파수변환부(10)와, 상기 주파수변환부(10)에서 출력되고 결합용콘덴서(C1)를 경유한 중간주파신호를 저역통과시키는 저역통과필터(20)를 포함하는 튜너에 있어서, 상기 주파수변환부(10)에서 출력되는 중간주파신호에 포함된 인접채널신호를 트랩 시키도록 트랩포인트를 형성시키는 트랩회로(15)를 상기 결합콘덴서(C1)와 저역통과필터(20) 사이에 구성함을 특징으로하는 중간주파신호에서의 인접채널 트랩회로.A tuner including a frequency converter 10 for outputting an intermediate frequency signal and a low pass filter 20 for low-passing the intermediate frequency signal output from the frequency converter 10 and via the coupling capacitor C1. The trap circuit 15 for forming a trap point to trap an adjacent channel signal included in the intermediate frequency signal output from the frequency converter 10 includes the coupling capacitor C1 and the low pass filter 20. An adjacent channel trap circuit in an intermediate frequency signal, characterized in that configured between. 제1항에 있어서, 상기 트랩회로(15)는 선로에서 접지로 접속된 제1직렬공진회로(L2, C3)와 제2직렬공진회로(L3, C4)로 구성함을 특징으로하는 중간주파신호에서의 인접채널 트랩회로.2. The intermediate frequency signal according to claim 1, wherein the trap circuit (15) comprises first and second series resonant circuits (L2, C3) and second series resonant circuits (L3, C4) connected to ground at a line. Adjacent channel trap circuit 제1항에 있어서, 상기 트랩회로(15)는 그 트랩포인터 각각을 수신채널의 인접채널에 포함되는 영상 주간주파수와 음성중간주파수 각각에 형성시킨 것을 특징으로하는 중간주파신호에서의 인접채널 트랩회로.The adjacent channel trap circuit in an intermediate frequency signal according to claim 1, wherein the trap circuit (15) is formed at each of the video main frequency and the audio intermediate frequency included in each of the trap pointers. . ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950044675A 1995-11-29 1995-11-29 Adjacent channel trap circuit for intermediate frequency signal KR970031259A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950044675A KR970031259A (en) 1995-11-29 1995-11-29 Adjacent channel trap circuit for intermediate frequency signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950044675A KR970031259A (en) 1995-11-29 1995-11-29 Adjacent channel trap circuit for intermediate frequency signal

Publications (1)

Publication Number Publication Date
KR970031259A true KR970031259A (en) 1997-06-26

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Family Applications (1)

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KR1019950044675A KR970031259A (en) 1995-11-29 1995-11-29 Adjacent channel trap circuit for intermediate frequency signal

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100714556B1 (en) * 2005-07-29 2007-05-07 삼성전기주식회사 Television receiver with improved audio and video

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100714556B1 (en) * 2005-07-29 2007-05-07 삼성전기주식회사 Television receiver with improved audio and video

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