KR0173228B1 - Resonance circuit of high frequency modulation unit - Google Patents

Resonance circuit of high frequency modulation unit Download PDF

Info

Publication number
KR0173228B1
KR0173228B1 KR1019950050750A KR19950050750A KR0173228B1 KR 0173228 B1 KR0173228 B1 KR 0173228B1 KR 1019950050750 A KR1019950050750 A KR 1019950050750A KR 19950050750 A KR19950050750 A KR 19950050750A KR 0173228 B1 KR0173228 B1 KR 0173228B1
Authority
KR
South Korea
Prior art keywords
high frequency
resonant circuit
channel
connection terminal
capacitor
Prior art date
Application number
KR1019950050750A
Other languages
Korean (ko)
Other versions
KR970055335A (en
Inventor
한기동
Original Assignee
이형도
삼성전기주식회사
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 이형도, 삼성전기주식회사 filed Critical 이형도
Priority to KR1019950050750A priority Critical patent/KR0173228B1/en
Publication of KR970055335A publication Critical patent/KR970055335A/en
Application granted granted Critical
Publication of KR0173228B1 publication Critical patent/KR0173228B1/en

Links

Classifications

    • 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
    • H03H7/0115—Frequency selective two-port networks comprising only inductors and capacitors
    • 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
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1783—Combined LC in series path

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

본 발명은 고주파변조부의 공진회로에 관한 것이다.The present invention relates to a resonant circuit of a high frequency modulator.

본 발명은 고주파변조부의 공진회로는 고주파변조IC내부 발진부에 제공하는 공진주파수를 발생시키는 공진회로를 종래의 SAW공진기 대신에 LC공진회로로 구성하여, 품질의 신뢰성을 향상시킴과 동시에 제품의 원가를 절감할 수 있는 것이다.According to the present invention, the resonant circuit of the high frequency modulator includes a resonant circuit that generates a resonant frequency provided to the internal oscillator of the high frequency modulator IC, instead of the conventional SAW resonator. You can save.

Description

고주파변조부의 공진회로Resonant Circuit of High Frequency Modulator

본 발명은 고주파변조부의 공진회로에 관한 것으로, 특히 제품 품질의 신뢰성을 향상시킴과 동시에 제품의 원가를 절감할 수 있는 고주파변조부의 공진회로.The present invention relates to a resonant circuit of a high frequency modulator, and in particular, a resonant circuit of a high frequency modulator capable of reducing the cost of a product while improving reliability of product quality.

일반적으로, VCR에는 테이프에 기록된 데이터를 읽어들여 베이스밴드의 비디오/오디오 신호로 복원하는 메인의 신호처리계에 더하여 이 복원된 방송신호를 RF(Radio Frequency)로 변환시켜 TV로 출력하는 고주파(RF)변조부가 내장되어 있으며, 집적회로(IC)로 구성되는 고주파변조부는 그 외부에 공진부가 구성되고, 이 공진부는 IC 내부의 발진부에 연결되어 변조를 위한 발진주파수를 제공한다.In general, in addition to the main signal processing system that reads data recorded on tape and restores the video / audio signal of the baseband, the VCR converts the restored broadcast signal into RF (Radio Frequency) and outputs it to the TV. An RF modulator is built in, and a high frequency modulator configured as an integrated circuit (IC) has a resonator formed outside thereof, and the resonator is connected to an oscillator inside the IC to provide an oscillation frequency for modulation.

일반적인 기술에 관련되는 종래 고주파변조부의 공진회로는 제1도에 도시되어 있는 바와 같이, 제1도를 참조하면 종래에 고주파변조를 수행하는 고주파변조IC(20)는 그 내부에 발진부(21)가 포함되어 있으며, 상기 발진부(21)에는 고주파변조IC(20)의 접속단자 (9)(10)(11)을 통해서 SAW 공진기(10)가 접속구성되어 있다.Resonant circuit of the conventional high frequency modulator according to the general technique is shown in FIG. 1, referring to FIG. 1, a high frequency modulator IC 20 that performs a high frequency modulation in the related art has an oscillator 21 therein. The oscillator 21 includes a SAW resonator 10 connected to the oscillator 21 through the connection terminals 9, 10, and 11 of the high frequency modulation IC 20.

상기에서 접속단자(9)로는 로우채널에 해당되는 공진주파수를 제공되고, 다른 접속단자(10)로는 하이채널에 해당되는 공진주파수가 제공된다.In the above, the connection terminal 9 is provided with a resonance frequency corresponding to a low channel, and the other connection terminal 10 is provided with a resonance frequency corresponding to a high channel.

그런데, 이와같은 종래의 고주파변조부의 공진회로는 SAW공진기를 사용하기 때문에 상기 SAW공진기 자체의 원자재가격으로 인해 고주파변조모듈에 대한 제품비가 상승되고, SAW공진의 진행성불량으로 발진무불량 등과 같은 문제점이 발생되어 고주파변조모듈 자체에 대한 신뢰성을 떨어뜨리는 문제점이 있다.However, since the conventional resonant circuit of the high frequency modulator uses a SAW resonator, the product cost for the high frequency modulator module is increased due to the raw material price of the SAW resonator itself, and problems such as no oscillation defect due to the progression of the SAW resonance are caused. There is a problem that is generated to reduce the reliability of the high-frequency modulation module itself.

본 발명은 상기한 문제점을 해결하고자 안출한 것으로, 따라서, 본 발명의 목적은 품질의 신뢰성을 향상시킴과 동시에 제품의 원가를 절감할 수 있도록 하는 고주파변조부의 공진회로를 제공하는데 있다.The present invention has been made to solve the above problems, and an object of the present invention is to provide a resonant circuit of a high frequency modulator to improve the reliability of the quality and at the same time reduce the cost of the product.

제1도는 종래 고주파변조부를 보이는 블록도이다.1 is a block diagram showing a conventional high frequency modulator.

제2도는 본 발명에 따른 공진회로를 구비한 고주파변조부를 도시한 블록도이다.2 is a block diagram showing a high frequency modulator having a resonant circuit according to the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : SAW공진기 15 : LC 공진회로10: SAW resonator 15: LC resonant circuit

20 : 고주파변조IC 21 : 발진기20: high frequency modulation IC 21: oscillator

C1∼C5 : 콘덴서 L1, L2 : 코일C1 to C5: condenser L1, L2: coil

상기한 목적을 달성하기 위한 기술적인 수단으로써, 본 발명에 의한 고주파변조부의 공진회로는 고주파변조IC의 발진부에 공진주파수를 제공하는 공진회로가 상기 발진부에 로우채널에 해당하는 공진주파수를 제공하는 로우채널LC공진회로와, 상기 발진부에 하이채널에 해당하는 공진주파수를 제공하는 하이채널LC공진회로를 구비함을 특징으로 한다.As a technical means for achieving the above object, in the resonant circuit of the high frequency modulator according to the present invention, a resonant circuit that provides a resonant frequency to the oscillator of the high frequency modulator IC provides a resonant frequency corresponding to a low channel to the oscillator. And a channel LC resonant circuit and a high channel LC resonant circuit providing a resonance frequency corresponding to a high channel in the oscillation unit.

이하, 본 발명에 따른 고주파변조부의 공진회로의 바람직한 실시예를 첨부한 도면을 참조하여 설명한다.Hereinafter, a preferred embodiment of a resonant circuit of a high frequency modulator according to the present invention will be described with reference to the accompanying drawings.

본 발명에 참조된 도면들에서 실질적으로 동일한 구성과 기능을 가진 구성요소들은 동일한 부호를 사용할 것이다.In the drawings referred to in the present invention, components having substantially the same configuration and function will use the same reference numerals.

제2도는 본 발명에 따른 고주파변조부의 공진회로를 도시한 블록회로도로서, 본 발명에 의한 고주파변조부의 공진회로는 고주파변조(IC)(20)의 발진부(21)에 접속단자(9)룰 통해서 로우채널(Low Channel)에 해당하는 공진주파수를 제공하는 LC공진회로(C1,C2,C5,L1)와 상기 발진부(21)에 접속단자(10)를 통해서 하이채널(High channel)에 해당하는 공진주파수를 제공하는 하이채널 LC공진회로(C3,C4,C5,L2)로 구성한다.2 is a block circuit diagram illustrating a resonant circuit of the high frequency modulator according to the present invention, wherein the resonant circuit of the high frequency modulator according to the present invention is connected to the oscillator 21 of the high frequency modulator (IC) 20 through a connection terminal 9 rule. Resonance corresponding to a high channel through the LC resonant circuit C1, C2, C5, L1 providing a resonant frequency corresponding to a low channel and a connection terminal 10 to the oscillator 21. It consists of high channel LC resonant circuits (C3, C4, C5, L2) that provide frequency.

상기 로우채널LC공진회로는 접속단자(9)와 접지사이에 콘덴서(C1)와 코일(L1)과 콘덴서(C5)를 직렬로 접속하고, 상기 코일(L1)과 콘덴서(C5)에 병렬로 콘덴서(C2)를 접속하여 구성한다.The low-channel LC resonant circuit connects the capacitor C1, the coil L1, and the capacitor C5 in series between the connection terminal 9 and the ground, and connects the capacitor L1 and the capacitor C5 in parallel. (C2) is connected and comprised.

그리고, 상기 하이채널LC공진회로는 접속단자(10)와 접지사이에 콘덴서(C3)와 코일(L2) 및 콘덴서(C5)를 직렬로 접속하고, 상기 코일(L2)과 콘덴서(C5)에 병렬로 콘덴서(C4)를 접속하여 구성한다.The high channel LC resonant circuit connects the capacitor C3, the coil L2, and the capacitor C5 in series between the connection terminal 10 and the ground, and is parallel to the coil L2 and the capacitor C5. The condenser C4 is connected and configured.

이와같이 구성된 본 발명의 따른 작용 및 효과를 첨부도면에 의거하여 상세히 설명한다.Operation and effects of the present invention configured as described above will be described in detail based on the accompanying drawings.

본 발명은 고주파변조IC내부 발진부에 연결되는 공진회로를 종래의 SAW 공진기 대신에 LC공진회로로 구성하여, 품질의 신뢰성을 향상시킴과 동시에 제품의 원가를 절감할 수 있는 것이다.According to the present invention, the resonant circuit connected to the internal oscillator of the high frequency modulation IC is configured as an LC resonant circuit instead of the conventional SAW resonator, thereby improving the reliability of the quality and reducing the cost of the product.

제2도를 참조하여 보다 구체적으로 설명하면, 고주파변조IC(20)는 텔레비젼신호인 베이스밴드를 고주파신호로 변조시키는 기능을 수행하는 회로인데, 상기 고주파변조IC(20)내부에는 변조를 수행하기 위해서 발진부(21)가 포함되어 있으며, 상기 발진부(21)는 외부에서 공진주파수를 고주파변조IC(20)의 접속단자(9)를 통해서 로우채널에 해당하는 공진주파수를 제공받고, 또한 접속단자(10)을 통해서 하이채널에 해당하는 공진주파수를 제공받아 발진주파수를 발생시키는 바, 본 발명에 의한 공진회로는 상기 접속단자(9)에 로우채널에 해당하는 공진주파수를 콘덴서(C1)(C2)(C5)와 코일(L1)의 공진회로에 의해서 제공하고, 접속단자(10)에 하이채널에 해당하는 공진주파수를 콘덴서(C3)(C4)(C5)와 코일(L2)의 공진회로에 의해서 제공한다.More specifically, referring to FIG. 2, the high frequency modulation IC 20 is a circuit that modulates a baseband, which is a television signal, into a high frequency signal, and modulates the inside of the high frequency modulation IC 20. The oscillation unit 21 is included in order for the oscillation unit 21 to receive a resonance frequency corresponding to a low channel through the connection terminal 9 of the high frequency modulation IC 20 from the outside, and also to the connection terminal ( The oscillation frequency according to the present invention is generated by receiving the resonance frequency corresponding to the high channel through 10). The resonance circuit according to the present invention converts the resonance frequency corresponding to the low channel to the connection terminal 9 in the condenser C1 and C2. The resonance frequency corresponding to the high channel at the connection terminal 10 by the resonance circuit of the capacitors C3, C4, C5 and the coil L2. to provide.

상술한 바와 같이 본 발명은 LC공진회로로 고주파변조부에 연결되는 공진회로를 구성함으로서 품질의 신뢰성을 유지하면서 동시에 제품의 원가를 절감시킬 수 있는 특별한 효과가 있는 것이다.As described above, the present invention has a special effect of reducing the cost of the product while maintaining the reliability of quality by configuring a resonance circuit connected to the high frequency modulator by the LC resonance circuit.

Claims (3)

고주파변조IC(20)의 발진부(21)에 공진주파수를 제공하는 공진회로에 있어서, 상기 발진부(21)의 접속단자(9)를 통해서 로우채널에 해당하는 공진주파수를 제공하는 로우채널LC공진회로(C1,C2,C5,L1); 상기 발진부(21)에 접속단자(10)를 통해서 하이채널에 해당하는 공진주파수를 제공하는 하이채널LC공진회로(C3,C4,C5,L2)를 구비함을 특징으로 하는 고주파변조부의 공진회로.A resonant circuit for providing a resonant frequency to the oscillator 21 of the high frequency modulation IC 20, the low channel LC resonant circuit for providing a resonant frequency corresponding to a low channel through the connection terminal 9 of the oscillator 21 (C1, C2, C5, L1); And a high channel LC resonant circuit (C3, C4, C5, L2) for providing a resonant frequency corresponding to a high channel through the connection terminal (10) to the oscillator (21). 제1항에 있어서, 상기 로우채널LC공진회로는 접속단자(9)와 접지 사이에 콘덴서(C1)와 코일(L1) 및 콘덴서(C5)를 직렬로 접속하고, 상기 코일(L1)과 콘덴서(C5)에 병렬로 콘덴서(C2)를 접속하여 구성함을 특징으로 하는 고주파변조부의 공진회로.2. The low channel LC resonant circuit according to claim 1, wherein the low-channel LC resonant circuit connects the capacitor C1, the coil L1, and the capacitor C5 in series between the connection terminal 9 and the ground. And a condenser (C2) connected in parallel to C5). 제1항에 있어서, 상기 하이채널LC공진회로는 접속단자(10)와 접지 사이에 콘덴서(C3)와 코일(L2)및 콘덴서(C5)를 직렬로 접속하고, 상기 코일(L2)과 콘덴서(C5)에 병렬로 콘덴서(C4)를 접속하여 구성함을 특징으로 하는 고주파변조부의 공진회로.The high-channel LC resonant circuit of claim 1, wherein the capacitor C3, the coil L2, and the capacitor C5 are connected in series between the connection terminal 10 and the ground, and the coil L2 and the capacitor ( And a condenser (C4) connected in parallel with C5).
KR1019950050750A 1995-12-15 1995-12-15 Resonance circuit of high frequency modulation unit KR0173228B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950050750A KR0173228B1 (en) 1995-12-15 1995-12-15 Resonance circuit of high frequency modulation unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950050750A KR0173228B1 (en) 1995-12-15 1995-12-15 Resonance circuit of high frequency modulation unit

Publications (2)

Publication Number Publication Date
KR970055335A KR970055335A (en) 1997-07-31
KR0173228B1 true KR0173228B1 (en) 1999-03-30

Family

ID=19440647

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950050750A KR0173228B1 (en) 1995-12-15 1995-12-15 Resonance circuit of high frequency modulation unit

Country Status (1)

Country Link
KR (1) KR0173228B1 (en)

Also Published As

Publication number Publication date
KR970055335A (en) 1997-07-31

Similar Documents

Publication Publication Date Title
KR900000567Y1 (en) Rf modulator
US5475876A (en) Tuner unit having electromagnetically isolated UHF and VHF section with no noise
KR0173228B1 (en) Resonance circuit of high frequency modulation unit
JPH1022857A (en) Video equipment, incorporating rf modulator and tv tuner
KR0173231B1 (en) Lc resonance circuit of high frequency modulating unit
KR0177673B1 (en) An Elc serial resonance circuit of a high-frequency modulation integrated circuit
KR100471152B1 (en) Small size integrated tuner
KR100262777B1 (en) High-frequency modulator built-in tv tuner
KR20000064590A (en) Multituner receiver
US7352412B2 (en) Miniaturized television tuner and television receiver including the same
JP2003189203A (en) Television tuner unit
KR200148328Y1 (en) Pll tuner
JP3018822U (en) High frequency conversion circuit
US7133653B2 (en) Receiver and composite component having local oscillator components and mixing circuit integrally formed on semiconductor substrate
JPH1022788A (en) Tuner
KR200218584Y1 (en) Oscillator circuit of tuner
KR0136126Y1 (en) Tunner earth structure
KR200223357Y1 (en) Connection device of satellite tuner and digital demodulator
KR20060014107A (en) Television tuner with single crystal resonance circuit
JP2004159114A (en) Quartz oscillator and semiconductor device
JP2525443Y2 (en) Tuner circuit
JPH02214336A (en) Uhf/vhf separator circuit
JPS62290217A (en) Electronic tuner
JPH08204597A (en) Rf modulator circuit
JPH08204598A (en) Rf modulator circuit

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20011004

Year of fee payment: 4

LAPS Lapse due to unpaid annual fee