BR9907406A - Método de reduzir distorção em um sinal amplificado e sistema de redução de distorção - Google Patents
Método de reduzir distorção em um sinal amplificado e sistema de redução de distorçãoInfo
- Publication number
- BR9907406A BR9907406A BR9907406-0A BR9907406A BR9907406A BR 9907406 A BR9907406 A BR 9907406A BR 9907406 A BR9907406 A BR 9907406A BR 9907406 A BR9907406 A BR 9907406A
- Authority
- BR
- Brazil
- Prior art keywords
- distortion
- distortion reduction
- amplified signal
- amplifier
- reduction system
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
<B>MéTODO DE REDUZIR DISTORçãO EM UM SINAL AMPLIFICADO E SISTEMA DE REDUçãO DE DISTORçãO<D> Um sistema aninhado de redução de distorção de alimentação de avanço, que reduz a distorção a partir de um amplificador principal em uma trajetória de sinal principal e usa um arranjo aninhado de alimentação de avanço para o amplificador de correção, com o objetivo de reduzir a distorção produzida a partir do amplificador de correção. Ao reduzir a distorção que parte do(s) amplificador(es) de correção e usar amplificador(es) de correção de qualidade progressivamente superior, o arranjo aninhado de alimentação de avanço produz uma representação aperfeiçoada e mais estável da distorção proveniente do amplificador principal, aliviando, dessa forma, a necessidade de controle de ganho e/ou fase variável na produção de sinal amplificado com distorção reduzida.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/195,754 US6127889A (en) | 1998-11-18 | 1998-11-18 | Nested feed forward distortion reduction system |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9907406A true BR9907406A (pt) | 2000-09-12 |
Family
ID=22722658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9907406-0A BR9907406A (pt) | 1998-11-18 | 1999-11-11 | Método de reduzir distorção em um sinal amplificado e sistema de redução de distorção |
Country Status (9)
Country | Link |
---|---|
US (1) | US6127889A (pt) |
EP (1) | EP1003278B1 (pt) |
JP (1) | JP3936108B2 (pt) |
KR (1) | KR100425385B1 (pt) |
CN (1) | CN1154227C (pt) |
AU (1) | AU5936899A (pt) |
BR (1) | BR9907406A (pt) |
CA (1) | CA2284333C (pt) |
DE (1) | DE69938488T2 (pt) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6411644B1 (en) * | 1998-09-29 | 2002-06-25 | Lucent Technologies Inc. | Frequency hop pilot technique for a control system that reduces distortion produced by electrical circuits |
US7115535B1 (en) * | 1999-08-02 | 2006-10-03 | The Procter & Gamble Company | Personal care articles comprising batting |
US6326840B1 (en) * | 1999-08-27 | 2001-12-04 | Kokusai Electric Co., Ltd. | Feed-forward distortion compensation amplifier and method of amplifying signal with feed-forward distortion compensation |
KR100548763B1 (ko) * | 2000-07-20 | 2006-02-06 | 엘지전자 주식회사 | 피드포워드 방식의 선형화기를 갖는 기지국 송신장치 |
KR20020023007A (ko) * | 2000-09-22 | 2002-03-28 | 박종섭 | 피드포워드 선형화 회로를 이용한 선형증폭회로 |
EP1193861B1 (en) * | 2000-09-22 | 2006-11-15 | Matsushita Electric Industrial Co., Ltd. | Feedforward amplifier |
CN1215727C (zh) | 2001-11-06 | 2005-08-17 | 株式会社Ntt都科摩 | 具有双重环路的前馈放大器 |
US6573793B1 (en) * | 2002-04-10 | 2003-06-03 | Romulo Gutierrez | Reflect forward adaptive linearizer amplifier |
US6700439B2 (en) | 2002-04-11 | 2004-03-02 | Andrew Corporation | Zero-bias bypass switch |
US6812786B2 (en) | 2002-04-11 | 2004-11-02 | Andrew Corporation | Zero-bias bypass switching circuit using mismatched 90 degrees hybrid |
US7385447B1 (en) * | 2004-06-28 | 2008-06-10 | Anadigics, Inc. | Power amplifier having curve-fitting predistorter |
US7224244B2 (en) * | 2004-08-06 | 2007-05-29 | Chelton, Inc. | Line-doubler delay circuit |
US7639001B2 (en) * | 2006-01-17 | 2009-12-29 | The Boeing Company | Built-in test for high speed electrical networks |
RU2770642C1 (ru) * | 2021-09-06 | 2022-04-19 | Вадим Георгиевич Прокопенко | Генератор хаотических колебаний |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3471798A (en) * | 1967-12-26 | 1969-10-07 | Bell Telephone Labor Inc | Feed-forward amplifier |
US4583049A (en) * | 1984-06-15 | 1986-04-15 | Trw Inc. | Feed-forward circuit |
US4580105A (en) * | 1985-01-25 | 1986-04-01 | At&T Bell Laboratories | Automatic reduction of intermodulation products in high power linear amplifiers |
GB2190557B (en) * | 1986-05-16 | 1989-12-13 | Marconi Co Ltd | Amplifying circuit arrangement |
US4885551A (en) * | 1988-10-31 | 1989-12-05 | American Telephone And Telegraph Company At&T Bell Laboratories | Feed forward linear amplifier |
US4926134A (en) * | 1988-12-29 | 1990-05-15 | Westinghouse Electric Corp. | Gain monitoring of distortion cancellation amplifiers in a feedforward linear amplifier |
US4926136A (en) * | 1988-12-29 | 1990-05-15 | Westinghouse Electric Corp. | Power amplifier combiner for improving linearity of an output |
US5012490A (en) * | 1989-12-26 | 1991-04-30 | At&T Bell Laboratories | Varying bandwidth digital signal detector |
US5117197A (en) * | 1990-11-09 | 1992-05-26 | Hughes Aircraft Company | High-power feed-forward microwave amplifier apparatus with out-of-band intermodulation product suppression |
US5304945A (en) * | 1993-04-19 | 1994-04-19 | At&T Bell Laboratories | Low-distortion feed-forward amplifier |
US5430893A (en) * | 1993-08-11 | 1995-07-04 | At&T Corp. | Radio receiver with increased dynamic range |
US5619168A (en) * | 1995-08-07 | 1997-04-08 | Lucent Technologies Inc. | Distortion creation and reduction circuit |
US5847603A (en) * | 1997-07-31 | 1998-12-08 | Lucent Technologies Inc. | Automatic control system for reducing distortion produced by electrical circuits |
US5977826A (en) * | 1998-03-13 | 1999-11-02 | Behan; Scott T. | Cascaded error correction in a feed forward amplifier |
-
1998
- 1998-11-18 US US09/195,754 patent/US6127889A/en not_active Expired - Fee Related
-
1999
- 1999-09-29 CA CA002284333A patent/CA2284333C/en not_active Expired - Fee Related
- 1999-11-09 DE DE69938488T patent/DE69938488T2/de not_active Expired - Lifetime
- 1999-11-09 EP EP99308925A patent/EP1003278B1/en not_active Expired - Lifetime
- 1999-11-11 AU AU59368/99A patent/AU5936899A/en not_active Abandoned
- 1999-11-11 CN CNB991234677A patent/CN1154227C/zh not_active Expired - Fee Related
- 1999-11-11 BR BR9907406-0A patent/BR9907406A/pt not_active Application Discontinuation
- 1999-11-12 KR KR10-1999-0050145A patent/KR100425385B1/ko not_active IP Right Cessation
- 1999-11-18 JP JP32776799A patent/JP3936108B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
AU5936899A (en) | 2000-05-25 |
JP3936108B2 (ja) | 2007-06-27 |
JP2000165153A (ja) | 2000-06-16 |
EP1003278B1 (en) | 2008-04-09 |
US6127889A (en) | 2000-10-03 |
EP1003278A2 (en) | 2000-05-24 |
CN1154227C (zh) | 2004-06-16 |
EP1003278A3 (en) | 2001-10-10 |
DE69938488D1 (de) | 2008-05-21 |
CN1254218A (zh) | 2000-05-24 |
KR20000035437A (ko) | 2000-06-26 |
KR100425385B1 (ko) | 2004-03-30 |
DE69938488T2 (de) | 2009-06-04 |
CA2284333A1 (en) | 2000-05-18 |
CA2284333C (en) | 2002-04-02 |
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Legal Events
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B07A | Technical examination (opinion): publication of technical examination (opinion) [chapter 7.1 patent gazette] | ||
B09B | Patent application refused [chapter 9.2 patent gazette] |
Free format text: INDEFIRO O PEDIDO DE ACORDO COM O ARTIGO 8O COMBINADO COM ARTIGO 13 DA LPI. |
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B09T | Decision of refusal: decision cancelled |
Free format text: REFERENTE A RPI 2092 DE 08/02/2011 CODIGO DE DESPACHO 9.2 |
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B09B | Patent application refused [chapter 9.2 patent gazette] |
Free format text: INDEFIRO O PEDIDO DE ACORDO COM O ARTIGO 8O COMBINADO COM ARTIGO 13 DA LPI. |
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B09B | Patent application refused [chapter 9.2 patent gazette] |
Free format text: MANTIDO O INDEFERIMENTO UMA VEZ QUE NAO FOI APRESENTADO RECURSO DENTRO DO PRAZO LEGAL. |