KR960002192Y1 - Separator for satellite receiver - Google Patents

Separator for satellite receiver Download PDF

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KR960002192Y1
KR960002192Y1 KR2019930019575U KR930019575U KR960002192Y1 KR 960002192 Y1 KR960002192 Y1 KR 960002192Y1 KR 2019930019575 U KR2019930019575 U KR 2019930019575U KR 930019575 U KR930019575 U KR 930019575U KR 960002192 Y1 KR960002192 Y1 KR 960002192Y1
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South Korea
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signal
input
capacitor
amplifier
output
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KR2019930019575U
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KR950010325U (en
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유병석
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Lg전자부품 주식회사
김희수
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    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/38Impedance-matching networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/20Adaptations for transmission via a GHz frequency band, e.g. via satellite

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  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

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Description

위성방송 수신기의 분배기Satellite receiver

제1도는 종래의 위성방송 수신장치의 회로블럭도1 is a circuit block diagram of a conventional satellite broadcasting receiver

제2도는 본 고안의 위성방송 수신장치의 회로블럭도2 is a circuit block diagram of a satellite broadcasting receiver according to the present invention.

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

1 : 안테나 2 : LNB1 antenna 2: LNB

3 : 동축케이블 11 : 자동이득조절기3: coaxial cable 11: automatic gain controller

12 : 증폭기 13 : 동조기12 amplifier 13 tuner

14 : 발진기 15 : 혼합기14: oscillator 15: mixer

16 : LNB전원 20 : 임피던스정합필터16: LNB power supply 20: Impedance matching filter

25 : 증폭기 30 : 분배기25 amplifier 30 splitter

50 : 출력단자50: Output terminal

본 고안은 위성방송 수신장치에 관한 것으로, 특히 위성방송신호를 수신하여 분배시 신호손실 이득을 적게하고, 변환이득을 크게하는데 적당하도록 한 위성방송 수신기의 분배기에 관한 것이다.The present invention relates to a satellite broadcasting receiver, and more particularly, to a distributor of a satellite broadcasting receiver, which is suitable for receiving a satellite broadcasting signal to reduce signal loss gain and increase conversion gain.

이하 첨부된 도면을 참조하여 종래기술을 설명하면 다음과 같다.Hereinafter, the prior art will be described with reference to the accompanying drawings.

제1도는 종래의 위성방송 수신장치의 회로블럭도를 나타낸 것으로써, 위성방송 신호를 수신하는 안테나(1)와, 안테나(1)에 수신된 신호를 받아 저잡음 증폭 및 주파수 변환하는 LNB(Low Noise Block)(2)와, LNB(2)의 출력신호를 전송함과 동시에 LNB(2)에 동작전원을 공급하는 동축케이블(3)과, 동축케이블(3)을 통해 LNB(2)에 구동전원을 공급하는 LNB전원(16)과, 동축케이블(3)을 통해 입력된 위성방송신호를 임피던스정합시켜 출력하는 임피던스정합필터(4)와, 임피던스정합필터(4)를 거쳐 입력된 위성방송신호를 또 다른 위성방송 수신기에 보내기 위해 증폭 및 분배하여 출력하는 증폭기(5), 커패시터(C1), 저항(R1-R3)으로 된 제1T형 임피던스변환기(6), 저항(R4-R6)으로 된 제2 T형 임피던스변환기(7)를 구비한 분배기(8)와, 분배기(8)의 R2에 연결되어 임피던스정합되어 출력되는 위성방송 신호의 대역을 필터링하여 출력하는 대역필터(9)와 대역필터(9)를 거쳐 입력되는 신호의 레벨을 조절하여 출력하는 자동이득조절기(11)와, 자동이득조절기(11)의 출력신호를 증폭하는 증폭기(12)와, 증폭기(12)를 거쳐 출력되는 위성방송신호를 선택된 채널에 동조시키는 동조기(13)와, 발진신호를 출력하는 발진기(l4)와 동조기(l3)에서 동조되어 입력된 신호에 발진기(14)의 발진신호를 혼합하여 위성방송 수신신호를 출력하는 혼합기(15)와, 상기 분배기(8)의 제2 T형 임피던스변환기(7)의 저항 R5에 연결되어 커패시터(C2)를 거쳐 타측으로 위성방송신호를 출력하는 출력단자(17)로 구성된다.FIG. 1 is a circuit block diagram of a conventional satellite broadcasting receiver, and includes an antenna 1 for receiving a satellite broadcasting signal and a low noise amplification and frequency conversion for receiving a signal received by the antenna 1. Block) 2, a coaxial cable 3 which transmits an output signal of the LNB 2 and supplies operating power to the LNB 2, and a driving power supply to the LNB 2 via the coaxial cable 3; The satellite broadcasting signal input through the LNB power supply 16, the impedance matching filter 4 for impedance matching the satellite broadcasting signal input through the coaxial cable 3, and the impedance matching filter 4 are outputted. 1T type impedance converter (6) consisting of an amplifier (5), a capacitor (C 1 ), a resistor (R 1- R 3 ) for amplifying, distributing and outputting to another satellite broadcasting receiver, and a resistor (R 4 -R) 6) as a second is connected to R 2 of the dispenser (8), a divider (8) provided with a T-type impedance converter (7) impedance matching being A band filter 9 for filtering and outputting a band of the satellite broadcasting signal to be output, and an automatic gain controller 11 for adjusting and outputting a level of a signal input through the band filter 9 and the automatic gain controller 11. An amplifier 12 for amplifying an output signal, a tuner 13 for tuning a satellite broadcast signal output through the amplifier 12 to a selected channel, an oscillator l4 and an tuner l3 for outputting an oscillation signal And a mixer 15 for mixing the oscillation signal of the oscillator 14 with the input signal and outputting a satellite broadcast reception signal, and a resistor R 5 of the second T-type impedance converter 7 of the distributor 8. It is composed of an output terminal 17 for outputting the satellite broadcast signal to the other side through the capacitor (C 2 ).

이와 같은 회로 블럭으로 구성되는 종래의 위성방송 수신장치의 동작은 안테나(1)에 수신된 위성방송신호는 LNB(2)에서 저잡음 증폭 및 주파수 변환되어, 동축케이블(3)을 거쳐 임피던스정합필터(4)에 입력되어 임피던스 정합되고 증폭기(5)에서 신호가 증폭되어 출력된다.In the operation of the conventional satellite broadcasting receiver composed of such a circuit block, the satellite broadcasting signal received by the antenna 1 is a low noise amplification and frequency conversion in the LNB (2), through the coaxial cable (3) impedance matching filter ( Input to 4) is impedance matched, the signal is amplified and output from the amplifier (5).

이 증폭신호는 커패티터(C1)에서 노이즈성분이 제거되어, 저항Rl, R2, R3, 및 R4, R5, R6으로 된 제1, 2임피던스분배기(6, 7)를 거쳐 임피던스분배에 따라 일정치의 신호손실을 거쳐 일정비율로 배분되어, 일부는 대역필터(9)의 입력으로 출력되고, 일부는 커패시터(C2)를 거쳐 출력단자(17)로 출력된다.The amplified signal is a noise component is removed from the capacitor (C 1 ), the first and second impedance divider (6, 7) consisting of resistors R l , R 2 , R 3 , and R 4 , R 5 , R 6 Through the distribution of the impedance through a constant signal loss according to the impedance distribution, a portion is outputted to the input of the band-pass filter 9, a part is output to the output terminal 17 via the capacitor (C 2 ).

상기 대역필터(9)에 입력된 위성방송신호는 대역제한에 의해 불필요한 잡음신호가 제거되어 출력되고, 이 신호를 받은 자동이득 조절기(11)는, 입력되는 신호의 조건(강입력 및 약입력)에 관계없이 동일레벨을 유지시켜 신호를 출력시킨다.The satellite broadcast signal inputted to the band filter 9 is output by removing unnecessary noise signals due to band limitation, and the automatic gain regulator 11 receiving the signal receives the conditions (strong input and weak input) of the input signal. Regardless of whether the signal is maintained at the same level.

자동이득조절기(11)를 거쳐 동일레벨로 조절되어 출력되는 위성방송신호는 증폭기(12)에서 증폭되어 출력된다.The satellite broadcast signal that is adjusted and output at the same level through the automatic gain controller 11 is amplified by the amplifier 12 and output.

증폭기(12)의 출력신호는 동조기(13)에 입력되어 선택된 채널의 신호에 동조되어 혼합기(15)에 입력된다.The output signal of the amplifier 12 is input to the tuner 13 and tuned to the signal of the selected channel and input to the mixer 15.

이때 발진기(14)는 발진신호를 혼합기(15)에 출력하게 되고, 혼합기(15)는 두신호를 혼합하여 위성방송 수신신호를 출력한다.At this time, the oscillator 14 outputs the oscillation signal to the mixer 15, and the mixer 15 mixes the two signals and outputs the satellite broadcasting reception signal.

이와 같은 종래의 기술은, 분배기의 수신신호 분배방식이 저항을 이용한 T형 임피던스 분할방식이므로 고주파 신호인 방송신호가 분배기를 거치면서 최소한 6dB의 신호손실을 갖게 되므로 이러한 신호손실을 보상하기 위해 증폭기를 비하여야만 하는 문제점이 있다.In the related art, since the received signal distribution method of the divider is a T-type impedance division method using a resistor, a broadcast signal, which is a high frequency signal, has a signal loss of at least 6 dB while passing through the divider. There is a problem that must be compared.

본 고안은 이와 같은 종래 기술의 문제점을 해결하기 위해 안출한 것으로, 분배기의 신호손실을 적게하여, 변환이득을 크게갖는 위성방송 수신기의 분배기를 제공함에 그 목적이 있다.The present invention has been made to solve the problems of the prior art, and the object of the present invention is to provide a divider of a satellite broadcasting receiver having a large conversion gain by reducing signal loss of the divider.

이와 같은 목적을 달성하기 위한 본 고안은 분배기에 두개의 코일을 인접하도록 구성하여 일측코일을 통과하는 수신신호가 타측코일에 유도결합되어 수신신호가 분배되도록 함으로써 신호의 분배손실을 줄이도록 함이 특징이다.The present invention for achieving the above object is characterized by reducing the distribution loss of the signal by configuring the two coils adjacent to the splitter so that the received signal passing through one coil is inductively coupled to the other coil to distribute the received signal. to be.

이하에서 이와 같은 목적을 실현하기 위한 본 고안의 실시예를 첨부된 도면을 참조하여 상세히 실명한다.Hereinafter, embodiments of the present invention for realizing such an object will be described in detail with reference to the accompanying drawings.

제2도는 본 발명을 설명하기 위한 위성방송 수신장치의 회로블럭도를 나타낸 것으로써, 회로의 구성은 위성방송신호를 수신하는 안테나(1)와, 안테나(1)로 부터 입력된 신호를 저잡음 증폭 및 주파수 변환하는 LNB(Low Noise Block)(2)와 LNB(2)의 출력신호를 전송하고, 동작전원을 공급하는 동축케이블(3)과 동축케이블(3)을 통해 LNB(2)에 동작전원을 공급하는 LNB전원(16)과, 동축케이블(3)을 거쳐 출력되는 수신신호중 불필요한 신호성분을 제거하는 임피던스정합필터(20)와, 임피던스정합필터(20)를 거쳐 입력된 수신신호를 증폭 및 분배하는 증폭기(25), 코일(L10, L20), 커패시터(C10, C20, C30), 저항(R10, R20)으로 된 분배기(30)와, 분배기(30)의 커패시터(C30)에 연결되어 분배된 수신신호를 출력하는 출력단자(50)와, 분배기(30)의 저항(R10)을 거쳐 출력되는 분배된 수신신호가 강입력 및 약입력시 동일신호레벨로 유지시켜 출력하는 자동이득조절기(11)와, 자동이득조절기(11)를 거쳐 레벨이 조절되어 입력되는 신호를 증폭하여 출력하는 증폭기(12)와, 증폭기(12)로부터 입력된 신호중 선택된 채널신호에 동조시키는 동조기(13)와, 발진신호를 출력하는 발진기(14)와, 동조기(13)와 발진기(14)로부터 입력된 신호를 혼합하여 위성방송 수신신호를 출력하는 혼합기(15)로 위성방송 수신장치가 구성된다.2 is a circuit block diagram of a satellite broadcasting receiver for explaining the present invention. The circuit configuration includes a low noise amplification of an antenna 1 for receiving a satellite broadcasting signal and a signal input from the antenna 1. And an operating power supply to the LNB 2 through a coaxial cable 3 and a coaxial cable 3 for transmitting the output signals of the LNB (Low Noise Block) 2 and the LNB 2 for frequency conversion and supplying the operating power. Amplifying and receiving the received signal input through the LNB power supply 16, the impedance matching filter 20 for removing unnecessary signal components from the received signal output through the coaxial cable 3, and the impedance matching filter 20. Splitter 30 consisting of amplifier 25, coils L 10 , L 20 , capacitors C 10 , C 20 , C 30 , resistors R 10 , R 20 , and capacitors of divider 30. The output terminal 50 is connected to the (C 30 ) and outputs the divided reception signal, and the distributed output through the resistor (R 10 ) of the divider 30 An automatic gain controller 11 which maintains and outputs the received signal at the same signal level during the strong input and the weak input; and an amplifier 12 which amplifies and outputs the input signal after the level is adjusted through the automatic gain controller 11; The satellite broadcasting is performed by mixing the signals inputted from the tuner 13 and the oscillator 14 outputting the oscillation signal, and the tuner 13 and the oscillator 14. The satellite broadcasting receiver comprises a mixer 15 for outputting a received signal.

이때 상기 분배기(30)는 위성방송신호를 증폭하는 증폭기(25)와, 상기 증폭기(25)의 출력신호를 임피던스정합 및 필터링하여 일측으로 신호를 전송하는 1차 코일(L10), 커패시터(C10), 저항(R10)이 직렬연결되어 자동이득조절부(11)에 연결되는 1차측과, 상기 저항(R10)이 1차 코일(L10)과 유도결합하는 2차코일(L20), 2차 코일 양단에 저항(R20) 및 커패시터(C20)가 직렬연결되고 상기 커패시터(C20)에 일단이 연결되어 타단은 출력단자(50)로 연결되는 커패시터(C30)로 2차측이 복수개로 구성된다.At this time, the splitter 30 includes an amplifier 25 for amplifying a satellite broadcast signal, a primary coil L 10 , and a capacitor C for transmitting signals to one side by impedance matching and filtering the output signal of the amplifier 25. 10), a resistor (R 10) is series-connected primary side coupled to the automatic gain control unit (11) and said resistance (R 10), a secondary coil for inductive coupling to the primary coil (L 10) (L 20 ), A resistor (R 20 ) and a capacitor (C 20 ) are connected in series at both ends of the secondary coil, and one end is connected to the capacitor (C 20 ), and the other end thereof is a capacitor (C 30 ) connected to the output terminal 50. The vehicle side is composed of a plurality.

이와 같은 회로구성을 갖는 위성방송 수신장치의 동작을 설명하면 다음과 같다.Referring to the operation of the satellite broadcasting receiver having the circuit configuration as follows.

안테나(1)에 수신된 위성방송신호는 LNB(2)에 입력되어 저잡을 증폭 및 주파수 변환되어 동축케이블(3)을 통하여 출력한다.The satellite broadcast signal received by the antenna 1 is input to the LNB 2 to amplify and frequency convert low noise, and output the same through the coaxial cable 3.

동축케이블(3)을 통하여 출력되는 수신신호는 임피던스필터(20)에 입력되어 임피던스정합 및 불필요한 잡음이 제거되어 분배기(30)의 증폭기(25)에 입력된다.The received signal output through the coaxial cable 3 is input to the impedance filter 20, impedance matching and unnecessary noise is removed and input to the amplifier 25 of the splitter 30.

증폭기(25)에 입력된 수신신호는 증폭되어 코일(L10)을 거쳐 커패시턴스(C10), 저항(R10)에서 임피던스정합 및 필터링되어 자동이득조절기(11)에 입력된다.The received signal input to the amplifier 25 is amplified and impedance-matched and filtered by the capacitance C 10 and the resistor R 10 via the coil L 10 and input to the automatic gain controller 11.

이때, 코일(L10)을 지나는 신호는 인접하여 구성된 코일(L20)에 유도결합되어, 커패시터(C20, C30) 및 저항(R20)에서 임피던스정합 및 필터링되어 또다른 위성방송 입력단자인 출력단자(50)로 입력된다.In this case, the signal passes through the coil (L 10) is inductively coupled to the coil (L 20) configured adjacent the capacitor (C 20, C 30) and a resistor (R 20) impedance matching and filtering is another satellite broadcast input terminal in Is input to the output terminal 50.

자동이득조절기(11)에 입력된 신호는 신호의 크기(강입력 및 약입력)에 관계없이 동일레벨로 조절되어 증폭기(12)에 입력된다.The signal input to the automatic gain controller 11 is adjusted to the same level and input to the amplifier 12 irrespective of the magnitude of the signal (strong input and weak input).

증폭기(12)에 입력된 신호는 필요한 크기의 신호로 증폭되고 동조기(13)에 입력되어 선택된 채널신호에 맞게 동조되어 혼합기(15)로 출력된다.The signal input to the amplifier 12 is amplified into a signal of a required size, input to the tuner 13, tuned to the selected channel signal, and output to the mixer 15.

이때 발잔기(14)에서 발진신호가 혼합기(15)에 출력되고 동조기(13)로부터 입력되는 신호와 혼합되어 방송수신 신호가 출력된다.At this time, the oscillator signal is output from the balancer 14 to the mixer 15 and mixed with the signal input from the tuner 13 to output a broadcast reception signal.

상기 위성방송 수신장치의 분배방식은 코일(L10) 및 커패시터(C10), 저항(R10)을 통과하는 수신신호 성분이 지로(Branch)를 통과하지 않고, 코일(L10)에 인접하여 구성한 코일(L20)에 유도결합되어 신호가 분배되어 출력된다.In the distribution method of the satellite broadcasting receiver, a reception signal component passing through the coil (L 10 ), the capacitor (C 10 ), and the resistor (R 10 ) does not pass through a branch, but is adjacent to the coil (L 10 ). Inductively coupled to the configured coil (L 20 ) and the signal is distributed and output.

따라서, 코일(L10)의 인덕턴스 값과 코일(L20)의 인덕턴스값을 똑같이 하면 증폭기(25)의 출력신호에 대한 삽입손실은 "0"이 되어 똑같은 크기를 갖는 위성방송 수신신호를 코일(L20)에서 얻을 수 있다.Therefore, if the inductance value of the coil L 10 and the inductance value of the coil L 20 are the same, the insertion loss of the output signal of the amplifier 25 becomes "0" so that the satellite broadcast reception signal having the same magnitude is converted into the coil ( L 20 ).

이와 같은 본 고안의 위성방송 수신장치는 수신신호 분배시 분배손실이 없도록 유도코일(Ll0, L20)의 유도결합에 의해 신호를 분배함으로써, 분배손실을 보상하기 위한 증폭기가 필요치 않아 회로구성이 간단해 지고, 생산원가가 절감되는 효과가 있다.The satellite broadcasting receiver according to the present invention distributes signals by inductive coupling of induction coils (L l 0 , L 20 ) so that there is no distribution loss in receiving signal distribution. It simplifies and reduces production costs.

Claims (2)

위성방송신호를 수신하는 안테나(l), LNB(2), 임피던스정합필터(20)를 거쳐 입력되는 위성방송신호를 증폭하는 증폭기(25)와, 상기 증폭기(25)의 출력신호를 임피던스정합 및 필터링하여 일측으로 신호를 전송하는 1차코일(L10), 커패시터(C10), 저항(Rl0)이 직렬연결되어 저항(Rl0)이 자동이득조절부(11)에 연결되는 1차측과, 상기 l차 코일(Ll0)과 유도결합하는 2차코일(L20), 2차 코일양단에 저항(R20) 및 커패시터(C20)가 직렬연결되고, 상기 커패시터(C20)에 일단이 연결되고 타단은 출력단자(50)로 연결되는 커패시터(C30)로 2차측이 구성됨을 특징으로 하는 위성방송수신기용 분배기.An amplifier 25 for amplifying the satellite broadcast signal input through the antenna l, the LNB 2, and the impedance matching filter 20 for receiving the satellite broadcast signal, and the output signal of the amplifier 25 the primary side that is filtered by connecting the primary coil (L 10), a capacitor (C 10), resistance (R l0), these are series-connected resistors (R l0) automatic gain control unit (11) for transmitting a signal to one side and A secondary coil L 20 that is inductively coupled to the primary coil L 10 , a resistor R 20 and a capacitor C 20 are connected in series at both ends of the secondary coil L 20 , and once at the capacitor C 20 . The connected and the other end of the satellite broadcast receiver divider, characterized in that the secondary side is composed of a capacitor (C 30 ) connected to the output terminal (50). 제1항에 있어서, 위성분배기(30)의 2차측은 복수개로 구비됨을 특징으로 하는 위성방송수신기용 분배기.The distributor of claim 1, wherein the secondary side of the satellite distributor (30) is provided in plurality.
KR2019930019575U 1993-09-25 1993-09-25 Separator for satellite receiver KR960002192Y1 (en)

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KR2019930019575U KR960002192Y1 (en) 1993-09-25 1993-09-25 Separator for satellite receiver

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KR2019930019575U KR960002192Y1 (en) 1993-09-25 1993-09-25 Separator for satellite receiver

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KR960002192Y1 true KR960002192Y1 (en) 1996-03-15

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