KR950022049A - Linear Circuit Applied to High Power Amplifier Using Forward Method - Google Patents

Linear Circuit Applied to High Power Amplifier Using Forward Method Download PDF

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Publication number
KR950022049A
KR950022049A KR1019930029599A KR930029599A KR950022049A KR 950022049 A KR950022049 A KR 950022049A KR 1019930029599 A KR1019930029599 A KR 1019930029599A KR 930029599 A KR930029599 A KR 930029599A KR 950022049 A KR950022049 A KR 950022049A
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South Korea
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path
signal
amplifier
linearization
coupler
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KR1019930029599A
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Korean (ko)
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KR960008217B1 (en
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홍헌진
안달
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양승택
재단법인 한국전자통신연구소
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Publication of KR950022049A publication Critical patent/KR950022049A/en
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Publication of KR960008217B1 publication Critical patent/KR960008217B1/en

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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3223—Modifications of amplifiers to reduce non-linear distortion using feed-forward
    • H03F1/3229—Modifications of amplifiers to reduce non-linear distortion using feed-forward using a loop for error extraction and another loop for error subtraction
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
    • H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
    • H03F2201/3218—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion the main amplifier or error amplifier being a feedforward amplifier

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

따라서 상기 종래기술의 문제점을 해결하기 위하여 안출된 본 발명은, 간단한 구조를 갖으며 구현이 용이한 포워드(Feedforward) 방식을 이용한 고출력 증폭기에 적용되는 선형화회로를 제공하는 그 목적이 있으며, 구동 증폭기내의 부증폭기(6)와 커플러(8) 사이에 설치되는 증폭기 경로와 선형화 경로로 입력 신호를 나누는 제1 커플러(11)와, 상기 제1 커플러(11)로 부터 분리된 선형화 경로로의 신호를 입력받아 증폭기 경로와 선형화 경로간 위상차를 보정해 주는 지연(delay)회로(12)와, 상기 지연회로(13)의 출력신호를 입력받아 선형화 경로의 신호 크기를 조절해 주는 가변 감쇠기(13)와, 상기 가변 감쇠기(13)의 출력신호를 입력받아 선형화 경로의 신호를 180°위상 변화시키는 가변 위상 변환기(14)와, 증폭기 경로에서 증폭된 신호 중 커플링(coupling)된 신호에서 선형화 경로를 거친 신호를 빼는 빼기 회로(15)와, 상기 빼기회로(15)의 출력을 증폭하는 A급의 제1 부증폭기와(16), 상기 제1 커플러(11)로부터 분리된 증폭기 경로로의 신호를 입력받아 증폭하는 제2 부증폭기(20) 및 상기 제1 및 제2 부증폭기(16,20)의 출력신호를 커플링하는 제2커플러(18)를 구비한다.Accordingly, an object of the present invention is to provide a linearization circuit applied to a high output amplifier using a forward method having a simple structure and easy to implement. A first coupler 11 for dividing an input signal into an amplifier path and a linearization path provided between the sub-amplifier 6 and the coupler 8, and a signal to a linearization path separated from the first coupler 11 is input. A delay circuit 12 for receiving a phase difference between the amplifier path and the linearization path, a variable attenuator 13 for receiving an output signal of the delay circuit 13 and adjusting a signal magnitude of the linearization path; A variable phase shifter 14 which receives the output signal of the variable attenuator 13 and changes the signal of the linearization path by 180 °, and a coupled signal among the signals amplified in the amplifier path. A subtraction circuit 15 for subtracting the signal passing through the linearization path, a first class A sub-amplifier 16 for amplifying the output of the subtraction circuit 15, and an amplifier path separated from the first coupler 11; And a second sub-amplifier 20 for receiving and amplifying a signal and a second coupler 18 for coupling the output signals of the first and second sub-amplifiers 16 and 20.

Description

포워드(Feedforward) 방식을 이용한 고출력 증폭기에 적용되는 선형회로Linear Circuit Applied to High Power Amplifier Using Forward Method

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

제1(a)도는 일반적인 증폭기의 선형화 회로구성도로서,1 (a) is a linear circuit configuration diagram of a general amplifier,

제1(b)도는 제1(a)도의 각 부분별 주파수 스펙트럼도.FIG. 1 (b) is a frequency spectrum diagram of each part of FIG. 1 (a).

제2(a)도는 본 발명에 따른 2단 고출력 증폭기의 선형화 회로 구성도.2 (a) is a block diagram of a linearization circuit of a two-stage high power amplifier according to the present invention.

제2(b)도는 제2(a)도의 각 부분별 주파수 스펙트럼도.FIG. 2 (b) is a frequency spectrum diagram of each part of FIG. 2 (a).

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

11,18 : 커플러(coupler) 12 : 지연(delay)회로11,18 coupler 12 delay circuit

13 : 가변 감쇠기 14 : 가변 위상 변환기13: variable attenuator 14: variable phase shifter

15 : 빼기 회로 16,20 : 부 증폭기15: subtraction circuit 16,20: negative amplifier

17 : 구동 증폭기(driving amplifier, AB급)17: driving amplifier (AB class)

19 : 전력증폭기(main amplifier, power amplifier, AB급)19: power amplifier (main amplifier, power amplifier, Class AB)

Claims (1)

고출력 전력 증폭기에 적용되는 선형화 회로에 있어서, 구동 증폭기내의 부 증폭기(6)와 커플러(8) 사이에 설치되어 증폭기 경로와 선형화 경로로 입력 신호를 나누는 제 1커플러(11)와, 상기 제1커플러(11)로 부터 분리된 선형화 경로로의 신호를 입력받아 증폭기 경로와 선형화 경로간 위상차를 보정해 주는 지연(delay)회로(12)와, 상기 지연회로(13)의 출력신호를 입력받아 선형화 경로의 신호 크기를 조절해 주는 가변 감쇠기(13)와, 상기 가변 감쇠기(13)의 출력신호를 입력받아 선형화 경로의 신호를 180° 위상 변환시키는 가변 위상 변환기(14)와, 증폭기 경로에서 증폭된 신호중 커플링(coupling)된 신호에서 선형화 경로를 거친 신호를 빼는 빼기 회로(15)와, 상기 빼기 회로(15)의 출력을 증폭하는 A급의 제1부 증폭기와(16), 상기 제1커플러(11)로부터 분리된 증폭기 경로로의 신호를 입력받아 증폭하는 제2부 증폭기(20), 및 상기 제1 및 제2부 증폭기(16,20)의 출력신호를 커플링하는 제2커플러(18)를 구비하는 것을 특징으로 하는 선형 화 회로.A linearization circuit applied to a high output power amplifier, comprising: a first coupler (11) arranged between a sub amplifier (6) and a coupler (8) in a drive amplifier to divide an input signal into an amplifier path and a linearization path, and the first coupler A delay circuit 12 for receiving a signal from the linearization path separated from the signal 11 and correcting a phase difference between the amplifier path and the linearization path, and a linearization path receiving the output signal of the delay circuit 13. A variable attenuator 13 for adjusting a signal amplitude of the variable attenuator, a variable phase shifter 14 for inputting an output signal of the variable attenuator 13 and phase shifting a signal of a linearization path by 180 degrees, and an amplified signal in an amplifier path. A subtraction circuit 15 for subtracting the signal passing through the linearization path from the coupled signal, a first class A amplifier 16 for amplifying the output of the subtraction circuit 15, and the first coupler ( Amplification isolated from And a second coupler 20 for receiving and amplifying a signal to a path, and a second coupler 18 for coupling the output signals of the first and second sub-amplifiers 16 and 20. Linearization circuit. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930029599A 1993-12-24 1993-12-24 Amp using feedforward method KR960008217B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930029599A KR960008217B1 (en) 1993-12-24 1993-12-24 Amp using feedforward method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930029599A KR960008217B1 (en) 1993-12-24 1993-12-24 Amp using feedforward method

Publications (2)

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KR950022049A true KR950022049A (en) 1995-07-26
KR960008217B1 KR960008217B1 (en) 1996-06-20

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KR1019930029599A KR960008217B1 (en) 1993-12-24 1993-12-24 Amp using feedforward method

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107134981A (en) * 2016-02-26 2017-09-05 恩智浦美国有限公司 Multipath amplifier with pre-cancellation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107134981A (en) * 2016-02-26 2017-09-05 恩智浦美国有限公司 Multipath amplifier with pre-cancellation

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Publication number Publication date
KR960008217B1 (en) 1996-06-20

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