KR920702078A - 피이드 포워드 취소가 인가되는 증폭기 장치 - Google Patents
피이드 포워드 취소가 인가되는 증폭기 장치Info
- Publication number
- KR920702078A KR920702078A KR1019910700719A KR910700719A KR920702078A KR 920702078 A KR920702078 A KR 920702078A KR 1019910700719 A KR1019910700719 A KR 1019910700719A KR 910700719 A KR910700719 A KR 910700719A KR 920702078 A KR920702078 A KR 920702078A
- Authority
- KR
- South Korea
- Prior art keywords
- amplifier
- output
- loop
- multiplier
- coupled
- Prior art date
Links
Classifications
-
- 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
- H03F1/3235—Modifications of amplifiers to reduce non-linear distortion using feed-forward using a loop for error extraction and another loop for error subtraction using a pilot signal
-
- 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
-
- 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
- H03F2201/3212—Using a control circuit to adjust amplitude and phase of a signal in a signal path
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 따른 피이드 포워드 취소를 가진 증폭기를 나타내고, 제2도는 본 발명의 본 발명의 대안의 실시예를 나타낸다. 제3도는 위상 정렬 루프의 동작을 도시한 커서 선도를 나타낸다.
Claims (6)
- 에러 신호를 제공하기 위해 증폭기 입력과 증폭기 출력을 비교하는 비교 수단을 포함하는 비교 루프와; 상기 에러 신호를 증폭하는 2차 증폭기 수단 및 상기 증폭된 에러 신호와 상기 증폭기 출력을 결합시키는 결합수단과, 파일럿 톤을 초래하기 위해 상기 증폭기 입력에 결합된 파일럿 발생기와, 상기 증폭기 출력에서 파일럿 톤의 레벨을 검출하기 위한 검출기 수단 및, 상기 검출의 기능으로서 취소 루프 성능을 정정하기 위한 정정수단을 포함하는 상기 취소 루프에 의해 피이드 포워드 취소가 인가되는 증폭기 장치에 있어서, 상기 장치에서, 상기 파일럿 발생기는 상기 증폭기 출력을 수신하는 배율기에 또한 결합되며, 상기 배율기는 상기 정정을 초래하는 위해 루프 파라미터를 제어하도록 배열된 출력 신호를 발생하는 것을 특징으로 하는 피이드 포워드 취소가 인가되는 증폭기 장치.
- 제1항에 있어서, 또다른 루프 파라미터를 제어하도록 배열된 출력 신호를 발생하는 또다른 증폭기를 포함하는 것을 특징으로 하는 피이드 포워드 취소가 인가되는 증폭기 장치.
- 제1항 또는 제2항에 있어서, 비교 루프의 파라미터를 제어하기 위한 수단을 포함하는 것을 특징으로 하는 피이드 포워드 취소가 인가되는 증폭기 장치.
- 선행항중 어느 한항에 있어서, 상기 파일럿 톤을 복조하는 수단과 상기 제어를 제공하기 위해 배율기 출력을 복조하는 수단을 포함하는 것을 특징으로 하는 피이드 포워드 취소가 인가되는 증폭기 장치.
- 제4항에 있어서, 상기 배율기와 상기 복조 수단간에 결합된 AC증폭기를 포함하는 것을 특징으로 하는 피이드 포워드 취소가 인가되는 증폭기 장치.
- 제4항 또는 제5항에 있어서, 상기 복조 수단과 제어간에 결합된 DC 증폭기를 포함하는 것을 특징으로 하는 피이드 포워드 취소가 인가되는 증폭기 장치.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB89259592 | 1989-11-16 | ||
GB8925959A GB2238195A (en) | 1989-11-16 | 1989-11-16 | Feed forward amplifier with pilot tone cancellation |
PCT/EP1990/001890 WO1991007812A1 (en) | 1989-11-16 | 1990-11-12 | Improvements in or relating to amplifiers |
Publications (1)
Publication Number | Publication Date |
---|---|
KR920702078A true KR920702078A (ko) | 1992-08-12 |
Family
ID=10666431
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019910700719A KR920702078A (ko) | 1989-11-16 | 1990-11-12 | 피이드 포워드 취소가 인가되는 증폭기 장치 |
Country Status (6)
Country | Link |
---|---|
US (1) | US5323119A (ko) |
EP (1) | EP0453535A1 (ko) |
JP (1) | JPH04504345A (ko) |
KR (1) | KR920702078A (ko) |
GB (1) | GB2238195A (ko) |
WO (1) | WO1991007812A1 (ko) |
Families Citing this family (52)
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GB9009295D0 (en) * | 1990-04-25 | 1990-06-20 | Kenington Peter B | Apparatus and method for reducing distortion in amplification |
US5334946A (en) * | 1990-04-25 | 1994-08-02 | British Technology Group Limited | Apparatus and method for reducing distortion in amplification |
US5444418A (en) * | 1994-07-29 | 1995-08-22 | Motorola, Inc. | Method and apparatus for feedforward power amplifying |
US5455537A (en) * | 1994-08-19 | 1995-10-03 | Radio Frequency Systems, Inc. | Feed forward amplifier |
US5508657A (en) * | 1995-01-30 | 1996-04-16 | Aml Communications, Inc. | Feed forward cancellation amplifier utilizing dynamic vector control |
JP3361657B2 (ja) * | 1995-07-20 | 2003-01-07 | 松下電器産業株式会社 | フィードフォワード増幅器の制御装置および制御方法 |
US5621354A (en) * | 1995-10-17 | 1997-04-15 | Motorola, Inc. | Apparatus and method for performing error corrected amplification in a radio frequency system |
US5623227A (en) * | 1995-10-17 | 1997-04-22 | Motorola, Inc. | Amplifier circuit and method of controlling an amplifier for use in a radio frequency communication system |
US5768699A (en) * | 1995-10-20 | 1998-06-16 | Aml Communications, Inc. | Amplifier with detuned test signal cancellation for improved wide-band frequency response |
FR2741218B1 (fr) * | 1995-11-09 | 1997-12-12 | Thomson Broadcast Systems | Procede et dispositif d'estimation de non-linearite |
US5742201A (en) * | 1996-01-30 | 1998-04-21 | Spectrian | Polar envelope correction mechanism for enhancing linearity of RF/microwave power amplifier |
US5892397A (en) * | 1996-03-29 | 1999-04-06 | Spectrian | Adaptive compensation of RF amplifier distortion by injecting predistortion signal derived from respectively different functions of input signal amplitude |
US5796304A (en) * | 1996-04-24 | 1998-08-18 | Powerwave Technologies, Inc. | Broadband amplifier with quadrature pilot signal |
US5789976A (en) * | 1996-06-17 | 1998-08-04 | Corporation De L'ecole Polytechnique | Digital adaptive control of feedforward amplifier using frequency domain cancellation |
US5808512A (en) * | 1997-01-31 | 1998-09-15 | Ophir Rf, Inc. | Feed forward amplifiers and methods |
US6133789A (en) * | 1997-12-10 | 2000-10-17 | Nortel Networks Corporation | Method and system for robustly linearizing a radio frequency power amplifier using vector feedback |
US6094096A (en) * | 1997-12-12 | 2000-07-25 | Lucent Technologies Inc. | Pilot detection for a control system that reduces distortion produced by electrical circuits |
US6232835B1 (en) | 1998-02-13 | 2001-05-15 | Nortel Networks Limited | System and method of linearizing the gain error of a power amplifier |
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GB2335811B (en) * | 1998-03-06 | 2000-03-15 | Wireless Systems Int Ltd | Feed forward amplifier |
SE513156C2 (sv) * | 1998-07-10 | 2000-07-17 | Ericsson Telefon Ab L M | Anordning och förfarande relaterande till radiokommunikation |
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US6700442B2 (en) * | 2001-11-20 | 2004-03-02 | Thomas Quang Ha | N way phase cancellation power amplifier |
US6677817B2 (en) | 2001-12-17 | 2004-01-13 | Powerwave Technologies, Inc. | Feed forward amplifier with amplifier stage failure detection using pilot tones |
US6556076B1 (en) | 2001-12-17 | 2003-04-29 | Powerwave Technologies, Inc. | Feed forward amplifier with amplifier stage failure detection using pilot tones |
US6812786B2 (en) * | 2002-04-11 | 2004-11-02 | Andrew Corporation | Zero-bias bypass switching circuit using mismatched 90 degrees hybrid |
US6700439B2 (en) | 2002-04-11 | 2004-03-02 | Andrew Corporation | Zero-bias bypass switch |
US6937094B2 (en) * | 2002-11-22 | 2005-08-30 | Powerwave Technologies, Inc. | Systems and methods of dynamic bias switching for radio frequency power amplifiers |
US20040198269A1 (en) * | 2002-12-30 | 2004-10-07 | Richard Phillips | Linearization of amplified feedback distortion |
US7403573B2 (en) * | 2003-01-15 | 2008-07-22 | Andrew Corporation | Uncorrelated adaptive predistorter |
US6985706B2 (en) * | 2003-01-23 | 2006-01-10 | Powerwave Technologies, Inc. | Feed forward amplifier system employing self-generating alignment lists and adaptive controller |
US7729668B2 (en) | 2003-04-03 | 2010-06-01 | Andrew Llc | Independence between paths that predistort for memory and memory-less distortion in power amplifiers |
US6972622B2 (en) * | 2003-05-12 | 2005-12-06 | Andrew Corporation | Optimization of error loops in distributed power amplifiers |
US7259630B2 (en) * | 2003-07-23 | 2007-08-21 | Andrew Corporation | Elimination of peak clipping and improved efficiency for RF power amplifiers with a predistorter |
US6963242B2 (en) * | 2003-07-31 | 2005-11-08 | Andrew Corporation | Predistorter for phase modulated signals with low peak to average ratios |
US7023273B2 (en) * | 2003-10-06 | 2006-04-04 | Andrew Corporation | Architecture and implementation methods of digital predistortion circuitry |
US7995976B2 (en) * | 2005-04-05 | 2011-08-09 | Powerwave Technologies, Inc. | System and method using the pilot frequency from a positive feedback pilot system to improve second loop convergence for a feedforward amplifier |
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-
1989
- 1989-11-16 GB GB8925959A patent/GB2238195A/en not_active Withdrawn
-
1990
- 1990-11-12 US US07/690,927 patent/US5323119A/en not_active Expired - Lifetime
- 1990-11-12 EP EP90916266A patent/EP0453535A1/en not_active Withdrawn
- 1990-11-12 JP JP2515158A patent/JPH04504345A/ja active Pending
- 1990-11-12 WO PCT/EP1990/001890 patent/WO1991007812A1/en not_active Application Discontinuation
- 1990-11-12 KR KR1019910700719A patent/KR920702078A/ko not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
GB8925959D0 (en) | 1990-01-04 |
EP0453535A1 (en) | 1991-10-30 |
WO1991007812A1 (en) | 1991-05-30 |
GB2238195A (en) | 1991-05-22 |
US5323119A (en) | 1994-06-21 |
JPH04504345A (ja) | 1992-07-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E601 | Decision to refuse application |