KR20040005106A - Attenuator using power combiner and coupler - Google Patents

Attenuator using power combiner and coupler Download PDF

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Publication number
KR20040005106A
KR20040005106A KR1020020039404A KR20020039404A KR20040005106A KR 20040005106 A KR20040005106 A KR 20040005106A KR 1020020039404 A KR1020020039404 A KR 1020020039404A KR 20020039404 A KR20020039404 A KR 20020039404A KR 20040005106 A KR20040005106 A KR 20040005106A
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KR
South Korea
Prior art keywords
coupler
terminal
attenuator
input signal
delayer
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KR1020020039404A
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Korean (ko)
Inventor
이종복
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엘지전자 주식회사
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Priority to KR1020020039404A priority Critical patent/KR20040005106A/en
Publication of KR20040005106A publication Critical patent/KR20040005106A/en

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    • 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
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/12—Neutralising, balancing, or compensation arrangements
    • 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
    • H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE: An attenuator using a power synthesizer and a coupler is provided to perform an attenuation function by using a Wilkinson divider, the coupler, and a 180-degree delayer without using nonlinear elements, thereby securing frequency characteristics without generating spurious signals. CONSTITUTION: An input terminal(IN) is branched through a microstrip line(ML) of a Wilkinson divider(1), and is directly connected to one-sided terminal of a coupler(3), then is connected to a ground terminal through a resistor(R2) of the coupler(3) via a 180-degree delayer(2). An input signal is branched through the microstrip line(ML) of the Wilkinson divider(1), and is directly outputted to an output terminal(OUT) through the one-sided terminal of the coupler(3). The input signal is outputted to the ground terminal through the resistor(R2) of the coupler(3) via the 180-degree delayer(2). The input signal is attenuated, and is outputted to the output terminal(OUT).

Description

전력합성기 및 커플러를 이용한 감쇄기{ATTENUATOR USING POWER COMBINER AND COUPLER}Attenuator Using Power Synthesizer and Coupler {ATTENUATOR USING POWER COMBINER AND COUPLER}

본 발명은 감쇄기의 설계기술에 관한 것으로, 전력 합성기 및 커플러를 이용하여 주파수에 따른 특성의 안정성, 왜곡 특성을 개선할 수 있도록 한 전력합성기 및 커플러를 이용한 감쇄기에 관한 것이다.The present invention relates to a design technology of the attenuator, and relates to a power synthesizer and attenuator using a coupler to improve the stability and distortion characteristics of the frequency characteristics using the power synthesizer and the coupler.

도 1은 종래 기술에 의한 감쇄기의 회로도로서 이에 도시한 바와 같이, 입력단자(IN)가 콘덴서(C1)를 통해 캐소우드가 각기 접지단자에 접속된 다이오드(D1),(D2)의 애노드에 접속되어 그 접속점이 한편으로는 콘덴서(C2)를 통해 출력단자(OUT)에 접속되고, 다른 한편으로는 쵸크코일(L1)을 통해 제어단자(CTL)에 접속되어 구성된 것으로, 이의 작용을 설명하면 다음과 같다.FIG. 1 is a circuit diagram of a damper according to the prior art, as shown therein, where the input terminal IN is connected to the anodes of diodes D1 and D2 whose cathodes are connected to ground terminals, respectively, via a capacitor C1. On the one hand, the connection point is connected to the output terminal OUT through the condenser C2, and on the other hand is connected to the control terminal CTL through the choke coil L1. Same as

입력신호가 콘덴서(C1)를 통한 후 다이오드(D1),(D2)의 애노드 및 콘덴서(C2)를 통해 출력단자(OUT)로 출력된다. 이때, 제어단자(CTL)를 통해 입력되는 제어신호가 쵸크코일(L1)을 통한 후 그 다이오드(D1),(D2)를 통해 접지단자로 흐르게 된다.The input signal is output through the capacitor C1 and then to the output terminal OUT through the anodes of the diodes D1 and D2 and the capacitor C2. At this time, the control signal input through the control terminal (CTL) flows through the choke coil (L1) and then through the diode (D1), (D2) to the ground terminal.

따라서, 상기 입력신호가 상기 다이오드(D1),(D2)에 의해 일정 수준으로 감쇄되어 상기 출력단자(OUT)로 출력된다.Therefore, the input signal is attenuated to a certain level by the diodes D1 and D2 and output to the output terminal OUT.

이와 같이 종래의 감쇄기에 있어서는 비선형 소자인 다이오드를 이용하여 입력신호를 감쇄시키게 되어 있어 불필요한 스프리어스(spurious)를 발생시킬 뿐만아니라 주파수에 따른 특성을 보장 받을 수 없는 문제점이 있었다.As described above, in the conventional attenuator, the input signal is attenuated using a diode which is a non-linear device, and thus, there is a problem in that unnecessary spurious is generated and the characteristic according to the frequency cannot be guaranteed.

따라서, 본 발명의 목적은 전력 합성기 및 커플러를 이용하여 주파수에 따른 특성의 안정성과 왜곡 특성을 개선하는 전력합성기 및 커플러를 이용한 감쇄기를 제공함에 있다.Accordingly, an object of the present invention is to provide an attenuator using a power synthesizer and a coupler for improving the stability and distortion characteristics of a frequency-dependent characteristic using a power synthesizer and a coupler.

도 1은 종래 기술에 의한 감쇄기의 회로도.1 is a circuit diagram of a damper according to the prior art.

도 2는 본 발명의 전력합성기 및 커플러를 이용한 감쇄기의 블록도.2 is a block diagram of an attenuator using the power synthesizer and coupler of the present invention.

***도면의 주요 부분에 대한 부호의 설명****** Description of the symbols for the main parts of the drawings ***

1 : 윌킨슨 디바이더2 :지연기Wilkinson Divider 2: Retarder

3 : 커플러3: coupler

도 2는 본 발명에 의한 전력합성기 및 커플러를 이용한 감쇄기의 블록도로서 이에 도시한 바와 같이, 입력단자(IN)를 윌킨슨 디바이더(1)의 마이크로스트립 라인(ML)을 통해 분기시켜 한편으로는 직접 커플러(3)의 일측 단자에 연결하고, 다른 한편으로는지연기(2)를 통한 후 상기 커플러(3)의 저항(R2)을 통해 접지단자에 연결한 것으로, 이와 같이 구성한 본 발명의 작용을 상세히 설명하면 다음과 같다.FIG. 2 is a block diagram of an attenuator using a power synthesizer and a coupler according to the present invention. To one terminal of the coupler (3), After connecting through the retarder (2) to the ground terminal through the resistor (R2) of the coupler (3), the operation of the present invention configured as described in detail as follows.

입력신호가 입력단에 설치된 윌킨슨 디바이더(1)의 마이크로스트립 라인(ML)을 통해 분기되어 직접 커플러(3)의 일측 단자를 통해 출력단자(OUT)로 출력되고, 다른 한편으로는지연기(2)를 통한 후 상기 커플러(3)의 저항(R2)을 통해 접지단자측으로 출력된다.The input signal is branched through the microstrip line ML of the Wilkinson divider 1 installed at the input terminal and output directly to the output terminal OUT through one terminal of the coupler 3, on the other hand. After the retarder 2 is output to the ground terminal side through the resistor (R2) of the coupler (3).

결국, 입력신호가 상기와 같은 과정을 통해 감쇄되어 출력단자(OUT)로 출력되는데, 이때 감쇄량은 커플러(3)의 커플링 계수를 이용하여 적절히 조절할 수 있다.As a result, the input signal is attenuated through the above process and output to the output terminal OUT. In this case, the attenuation amount can be appropriately adjusted by using the coupling coefficient of the coupler 3.

이상에서 상세히 설명한 바와 같이 본 발명은 비선형 소자를 사용하지 않고윌킨슨 디바이더, 커플러,지연기를 이용하여 감쇄기능을 수행하도록 함으로써, 불필요하게 스프리어스를 발생시키지 않고 주파수에 따른 특성을 보장 받을 수 있는 효과가 있다.As described in detail above, the present invention provides a Wilkinson divider, a coupler, By performing the attenuation function using a delay, there is an effect that can be guaranteed characteristics according to the frequency without generating unnecessary spurious.

Claims (1)

입력단자(IN)를 윌킨슨 디바이더(1)의 마이크로스트립 라인(ML)을 통해 한편으로는 직접 커플러(3)의 일측 단자에 연결하고, 다른 한편으로는지연기(2)를 통한 후 그 커플러(3)의 저항(R2)을 통해 접지단자에 연결하여 구성한 것을 특징으로 하는 전력합성기 및 커플러를 이용한 감쇄기.Connect the input terminal (IN) to one terminal of the coupler (3) directly on the one hand via the microstrip line (ML) of the Wilkinson divider (1), and on the other hand A power synthesizer and an attenuator using a coupler, characterized in that configured through the delay (2) and then connected to the ground terminal through the resistor (R2) of the coupler (3).
KR1020020039404A 2002-07-08 2002-07-08 Attenuator using power combiner and coupler KR20040005106A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0121278A1 (en) * 1983-03-31 1984-10-10 Koninklijke Philips Electronics N.V. Attenuator circuit
US5742204A (en) * 1996-02-29 1998-04-21 Harris Corporation Digitally programmable differential attenuator with tracking common mode reference
KR20000073806A (en) * 1999-05-14 2000-12-05 김영환 Low phase variable reducer of refection type

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0121278A1 (en) * 1983-03-31 1984-10-10 Koninklijke Philips Electronics N.V. Attenuator circuit
US4625131A (en) * 1983-03-31 1986-11-25 U.S. Philips Corporation Attenuator circuit
US5742204A (en) * 1996-02-29 1998-04-21 Harris Corporation Digitally programmable differential attenuator with tracking common mode reference
KR20000073806A (en) * 1999-05-14 2000-12-05 김영환 Low phase variable reducer of refection type

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