KR950010392A - Frequency tuning device of double conversion tuner - Google Patents

Frequency tuning device of double conversion tuner Download PDF

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Publication number
KR950010392A
KR950010392A KR1019930017682A KR930017682A KR950010392A KR 950010392 A KR950010392 A KR 950010392A KR 1019930017682 A KR1019930017682 A KR 1019930017682A KR 930017682 A KR930017682 A KR 930017682A KR 950010392 A KR950010392 A KR 950010392A
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KR
South Korea
Prior art keywords
intermediate frequency
mixing
local oscillation
frequency signal
tuner
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Application number
KR1019930017682A
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Korean (ko)
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KR960002666B1 (en
Inventor
임형택
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이종수
금성알프스전자 주식회사
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Priority to KR1019930017682A priority Critical patent/KR960002666B1/en
Publication of KR950010392A publication Critical patent/KR950010392A/en
Application granted granted Critical
Publication of KR960002666B1 publication Critical patent/KR960002666B1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits

Abstract

본 발명은 더블 콘버젼 튜너의 주파수 선국장치에 관한 것으로 제1국부 발진부와 제2국부 발진부의 주파수 틀어짐을 하나의 위상동기루프만 사용하여 보정함으로서 항상 안정된 제2중간주파수신호를 얻을 수 있다. 이를 위하여, 제1국부 발진신호와 제2국부 발진신호를 혼합하여 제3중간 주파수신호를 만들어내는 제3혼합부를 설치하고 제1국부 발진주파수와 제2국부발진 주파수의 차의 성분인 제3중간 주파수를 기준으로 위상동기루프 선국동작을 함으로써 제1국부 발진신호와 제2국부 발진신호의 주파수 틀어짐을 동시에 보정해 줄수 있다.The present invention relates to a frequency tuning device of a double conversion tuner. By correcting the frequency shift of the first local oscillator and the second local oscillator using only one phase-locked loop, a second stable intermediate frequency signal can be obtained at all times. To this end, a third mixing part for mixing the first local oscillation signal and the second local oscillation signal to produce a third intermediate frequency signal is installed, and the third intermediate element is a component of the difference between the first local oscillation frequency and the second local oscillation frequency. By performing the phase-locked loop tuning operation based on the frequency, the frequency shift of the first local oscillation signal and the second local oscillation signal can be simultaneously corrected.

Description

더블콘버젼 튜너의 주파수 선국장치Frequency tuning device of double conversion tuner

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

제2도는 본 고안에 따른 더블콘버젼 튜너의 블럭도.2 is a block diagram of a double conversion tuner according to the present invention.

Claims (5)

공중선(ANT)를 통해 수신된 고주파신호와 제1국부발진부에서 발생된 제1국부발진신호를 혼합하여 고주파 신호보다 낮은 제1중간주파수 신호를 출력해내는 제1혼합수단과, 상기 제1혼합수단으로부터 발생된 제1중간주파수 신호와 제2국부발진부에서 발생된 제2국부발진신호를 혼합하여 제2중간주파수 신호를 출력해내는 제2혼합수단을 구비한 더블콘버젼 튜너에 있어서, 상기 제1국부발진신호와 상기 제2국부발진신호를 혼합하여 제3중간주파수 신호를 출력시키는 제3혼합수단과, 상기 제3혼합수단으로부터 제3중간주파수신호를 받아서 제3중간주파수 신호에 상응하는 전압으로 전환하여 제1국부발진기로 공급하는 위상동기회로부를 구비하는 것을 특징으로 하는 더블콘버젼 튜너 선국장치.First mixing means for mixing the high frequency signal received through the aerial line ANT and the first local oscillation signal generated by the first local oscillation unit to output a first intermediate frequency signal lower than the high frequency signal; A double conversion tuner having a second mixing means for outputting a second intermediate frequency signal by mixing a first intermediate frequency signal generated by a second local oscillation signal generated by a second local oscillator. Third mixing means for mixing a local oscillation signal and the second local oscillation signal to output a third intermediate frequency signal, and receiving a third intermediate frequency signal from the third mixing means at a voltage corresponding to the third intermediate frequency signal. And a phase synchronizing circuit section for converting and feeding the first local oscillator. 제1항에 있어서, 상기 공중선(ANT)을 통해 수신된 고주파 신호가, 공중선에 접속된 밴드패스필터를 통해 일정 대역망의 고주파가 통과하는 수단을 추가로 구비함을 특징으로 하는 더블콘버젼 튜너 선국장치.The double conversion tuner according to claim 1, wherein the high frequency signal received through the aerial line ANT further includes means for allowing a high frequency of a predetermined band network to pass through a band pass filter connected to the aerial line. Tuning device. 제1항에 있어서, 상기 제1혼합수단으로 발생된 제1중간주파수가, 제1혼합부에 접속된 제1중간주파수 밴드패스필터를 통해 일정대역만의 제1중간주파수가 통과하는 수단을 추가로 구비함을 특징으로 하는 더블콘버젼 튜너 선국장치.2. The apparatus of claim 1, wherein the first intermediate frequency generated by the first mixing means passes through the first intermediate frequency band pass filter connected to the first mixing unit. Double tuner tuner tuning device characterized in that provided with. 제2항에 있어서, 상기 밴드패스필터를 통과한 고주파 신호가, 밴드패스필터와 제1혼합부사이에 접속된 고주파 증폭단에 의해 일정크기의 고주파로 증폭시키는 증폭수단을 추가로 구비함을 특징으로 하는 더블콘버젼 튜너 선국장치.3. The high frequency signal passing through the band pass filter further comprises an amplifying means for amplifying a high frequency of a predetermined size by a high frequency amplifying stage connected between the band pass filter and the first mixing unit. Double-conversion tuner tuner. 제3항에 있어서, 상기 제1중간주파수 밴드패스필터를 통과한 제1중간주파수가, 제1중간주파수 밴드패스필터와 제2혼합부 사이에 접속된 제1중간주파수 증폭단에 의해 일정크기의 주파수로 증폭시키는 증폭수단을 추가로 구비함을 특징으로 하는 더블콘버젼 튜너 선국장치.4. The frequency converter of claim 3, wherein the first intermediate frequency passing through the first intermediate frequency band pass filter is a constant frequency by a first intermediate frequency amplifying stage connected between the first intermediate frequency band pass filter and the second mixing unit. Double tuner tuner tuning device characterized in that it further comprises an amplification means for amplifying. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930017682A 1993-09-04 1993-09-04 Double converter tuner KR960002666B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930017682A KR960002666B1 (en) 1993-09-04 1993-09-04 Double converter tuner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930017682A KR960002666B1 (en) 1993-09-04 1993-09-04 Double converter tuner

Publications (2)

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KR950010392A true KR950010392A (en) 1995-04-28
KR960002666B1 KR960002666B1 (en) 1996-02-24

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102515241B1 (en) * 2022-11-08 2023-03-29 국방과학연구소 Thermal fatigue characteristic evaluation apparatus and method for barrel material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102515241B1 (en) * 2022-11-08 2023-03-29 국방과학연구소 Thermal fatigue characteristic evaluation apparatus and method for barrel material

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Publication number Publication date
KR960002666B1 (en) 1996-02-24

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