BR0016188A - Sistema e método para auto-polarização de um amplificador - Google Patents
Sistema e método para auto-polarização de um amplificadorInfo
- Publication number
- BR0016188A BR0016188A BR0016188-8A BR0016188A BR0016188A BR 0016188 A BR0016188 A BR 0016188A BR 0016188 A BR0016188 A BR 0016188A BR 0016188 A BR0016188 A BR 0016188A
- Authority
- BR
- Brazil
- Prior art keywords
- amplifier
- bias
- auto
- present
- power periods
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- 230000010267 cellular communication Effects 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 abstract 1
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
- H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
- H03F1/301—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in MOSFET amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/447—Indexing scheme relating to amplifiers the amplifier being protected to temperature influence
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Transmitters (AREA)
Abstract
"SISTEMA E MéTODO PARA AUTO-POLARIZAçãO DE UM AMPLIFICADOR". A presente invenção proporciona um método e aparelho para auto-polarizar uma amplificador. A invenção é particularmente útil ao polarizar amplificadores não lineares e amplificadores cujo sinal de entrada pode ter a amplitude modulada (AM). O sistema de autopolarização da presente invenção possui um circuito de retroalimentação de polarização ativo que continuamente ajusta a condição de polarização de um amplificador para um estado desejado durante a operação do amplificador por monitorar uma quantidade física indicativa do estado de operação do amplificador e controlando a polarização do amplificador de modo a controlar o ponto de operação do amplificador suficientemente para compensar variações nas características elétricas do amplificador, na carga do amplificador, na temperatura do amplificador e nos sinais de entrada. No caso de um sinal de entrada AM, o sistema de auto-polarização da presente invenção pode proporcionar uma função de amostra e controle de modo que a polarização do amplificador é a mesma durante períodos de força elevada e períodos de força baixa, mesmo que no entanto durante os períodos de força elevada o amplificador possa estar operando em uma região não linear. Em uma variação da invenção, o amplificador pode ser um transistor RF, por exemplo, um transistor bipolar e pode ser utilizado em um sistema de comunicações celular móvel. Adicionalmente, o presente sistema de auto-polarização de amplificador elimina a necessidade de manualmente estabelecer a polarização do amplificador durante a produção e permite o uso de qualquer tipo de transistor no amplificador.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/455,939 US6429746B1 (en) | 1999-12-07 | 1999-12-07 | System and method for auto-bias of an amplifier |
| PCT/IB2000/001799 WO2001043277A1 (en) | 1999-12-07 | 2000-12-04 | System and method for auto-bias of an amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR0016188A true BR0016188A (pt) | 2002-08-13 |
Family
ID=23810821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR0016188-8A BR0016188A (pt) | 1999-12-07 | 2000-12-04 | Sistema e método para auto-polarização de um amplificador |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US6429746B1 (pt) |
| EP (1) | EP1254508B1 (pt) |
| JP (1) | JP2003516689A (pt) |
| CN (1) | CN1408142A (pt) |
| AT (1) | ATE289459T1 (pt) |
| AU (1) | AU1721701A (pt) |
| BR (1) | BR0016188A (pt) |
| DE (1) | DE60018218T2 (pt) |
| ES (1) | ES2237472T3 (pt) |
| WO (1) | WO2001043277A1 (pt) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2799063B1 (fr) * | 1999-09-24 | 2001-12-21 | Centre Nat Etd Spatiales | Emetteur de signaux radioelectriques modules a polarisation d'amplification auto-adaptee |
| JP3841640B2 (ja) * | 2000-11-24 | 2006-11-01 | 富士通株式会社 | 半導体集積回路 |
| SE0101961D0 (sv) * | 2001-06-01 | 2001-06-01 | Ericsson Telefon Ab L M | Bias current control in transistors |
| US6828859B2 (en) * | 2001-08-17 | 2004-12-07 | Silicon Laboratories, Inc. | Method and apparatus for protecting devices in an RF power amplifier |
| EP1470297A1 (en) | 2001-12-04 | 2004-10-27 | Arichell Technologies, Inc. | Electronic faucets for long-term operation |
| US6750722B2 (en) * | 2002-06-28 | 2004-06-15 | Freescale Semiconductor, Inc. | Bias control for HBT power amplifiers |
| US7049891B2 (en) * | 2004-05-12 | 2006-05-23 | Sige Semiconductor Inc. | Amplifier bias enhancement technique |
| US7084705B2 (en) * | 2004-06-01 | 2006-08-01 | Agere Systems Inc. | Automatic biasing of a power device for linear operation |
| US7113043B1 (en) * | 2004-06-16 | 2006-09-26 | Marvell International Ltd. | Active bias circuit for low-noise amplifiers |
| US7560991B2 (en) * | 2006-02-21 | 2009-07-14 | Realtek Semiconductor Corp. | Dynamically compensated operational amplifier |
| JP4857189B2 (ja) | 2007-05-16 | 2012-01-18 | 日本電信電話株式会社 | 広帯域低雑音増幅器 |
| ITPI20070073A1 (it) * | 2007-06-13 | 2008-12-14 | Antonio Sebastiano Abbadessa | Sistema per migliorare il rendimento di un amplificatore rf e l'amplificatore cosi ottenuto |
| US8243956B2 (en) * | 2007-08-13 | 2012-08-14 | Gentex Corporation | Auto bias microphone system for use with multiple loads and method of forming same |
| WO2011023210A1 (en) * | 2009-08-27 | 2011-03-03 | Verigy ( Singapore) Pte. Ltd. | Adjustable gain amplifier, automated test equipment and method for adjusting a gain of an amplifier |
| US8319560B2 (en) * | 2009-10-05 | 2012-11-27 | Hittite Microwave Corporation | Switched active bias control and power-on sequencing circuit for an amplifier |
| JP5485332B2 (ja) * | 2012-05-09 | 2014-05-07 | 日本電信電話株式会社 | 可変利得増幅器、及び増幅回路 |
| US8736379B1 (en) * | 2013-02-08 | 2014-05-27 | Infineon Technologies Ag | Input match network for a power circuit |
| CN104682880B (zh) * | 2013-11-26 | 2018-01-26 | 展讯通信（上海）有限公司 | 抑制音频输出噪声的电路和音频输出电路 |
| FR3059493B1 (fr) * | 2016-11-29 | 2019-11-22 | Stmicroelectronics Sa | Regulation d'un amplificateur rf |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3984783A (en) * | 1975-03-27 | 1976-10-05 | Motorola, Inc. | Amplifier |
| US4458213A (en) | 1982-12-13 | 1984-07-03 | Sony Corporation | Constant quiescent current, class AB amplifier output stage |
| US4864251A (en) * | 1988-11-14 | 1989-09-05 | Tektronix, Inc. | Compensation circuit for power amplifier |
| US5422522A (en) * | 1992-08-20 | 1995-06-06 | Sgs-Thomson Microelectronics, Inc. | Device for biasing an RF device operating in quasi-linear modes with temperature compensation |
| JP3365428B2 (ja) * | 1992-12-09 | 2003-01-14 | ソニー株式会社 | 高周波パワーアンプのバイアス制御回路 |
| JP3325348B2 (ja) * | 1992-12-28 | 2002-09-17 | 株式会社東芝 | 電力増幅装置 |
| GB2317289B (en) * | 1996-09-12 | 2001-03-14 | Nokia Mobile Phones Ltd | Amplifier system |
| DE69830106T2 (de) * | 1997-07-31 | 2005-11-17 | Matsushita Electric Industrial Co., Ltd., Kadoma | Vorrichtung zur automatischen Verstärkungsregelung für Mikrowellen |
| FI105611B (fi) * | 1998-03-13 | 2000-09-15 | Nokia Mobile Phones Ltd | Radiotajuusvahvistimet |
| US6091302A (en) * | 1998-03-23 | 2000-07-18 | Ameramp, Llc | Electronic circuit biasing control system |
| US6111466A (en) * | 1999-03-22 | 2000-08-29 | Motorola, Inc. | Amplifier with feedback to provide bias adjustment |
-
1999
- 1999-12-07 US US09/455,939 patent/US6429746B1/en not_active Expired - Lifetime
-
2000
- 2000-12-04 BR BR0016188-8A patent/BR0016188A/pt not_active IP Right Cessation
- 2000-12-04 JP JP2001543849A patent/JP2003516689A/ja active Pending
- 2000-12-04 AU AU17217/01A patent/AU1721701A/en not_active Abandoned
- 2000-12-04 ES ES00979836T patent/ES2237472T3/es not_active Expired - Lifetime
- 2000-12-04 CN CN00816860A patent/CN1408142A/zh active Pending
- 2000-12-04 EP EP00979836A patent/EP1254508B1/en not_active Expired - Lifetime
- 2000-12-04 AT AT00979836T patent/ATE289459T1/de not_active IP Right Cessation
- 2000-12-04 DE DE60018218T patent/DE60018218T2/de not_active Expired - Lifetime
- 2000-12-04 WO PCT/IB2000/001799 patent/WO2001043277A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003516689A (ja) | 2003-05-13 |
| ATE289459T1 (de) | 2005-03-15 |
| AU1721701A (en) | 2001-06-18 |
| ES2237472T3 (es) | 2005-08-01 |
| DE60018218T2 (de) | 2005-12-29 |
| EP1254508B1 (en) | 2005-02-16 |
| EP1254508A1 (en) | 2002-11-06 |
| US6429746B1 (en) | 2002-08-06 |
| WO2001043277A1 (en) | 2001-06-14 |
| CN1408142A (zh) | 2003-04-02 |
| DE60018218D1 (de) | 2005-03-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B08F | Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette] |
Free format text: REFERENTE A 10A ANUIDADE(S). |
|
| B08K | Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette] |
Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2112 DE 28/06/2011. |