BR9911731A - Método e gerador de corrente exponencial aperfeiçoados - Google Patents
Método e gerador de corrente exponencial aperfeiçoadosInfo
- Publication number
- BR9911731A BR9911731A BR9911731-2A BR9911731A BR9911731A BR 9911731 A BR9911731 A BR 9911731A BR 9911731 A BR9911731 A BR 9911731A BR 9911731 A BR9911731 A BR 9911731A
- Authority
- BR
- Brazil
- Prior art keywords
- generator
- value
- boost
- current method
- exponential current
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
- H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
- H03F3/45179—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using MOSFET transistors as the active amplifying circuit
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
- H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
- H03F3/4508—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using bipolar transistors as the active amplifying circuit
- H03F3/45085—Long tailed pairs
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G1/00—Details of arrangements for controlling amplification
- H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
- H03G1/0017—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid state elements of the amplifier
- H03G1/0023—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid state elements of the amplifier in emitter-coupled or cascode amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45454—Indexing scheme relating to differential amplifiers the CSC comprising biasing means controlled by the input signal
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45471—Indexing scheme relating to differential amplifiers the CSC comprising one or more extra current sources
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45658—Indexing scheme relating to differential amplifiers the LC comprising two diodes of current mirrors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Control Of Amplification And Gain Control (AREA)
- Dc-Dc Converters (AREA)
Abstract
Patente de Invenção: "MéTODO E GERADOR DE CORRENTE EXPONENCIAL APERFEIçOADOS". Um equipamento e método para gerar um par de correntes I~ p~, I~ m~, em que a razão do par está exponencialmente relacionada a um sinal de controle e em que I~ p~ ou I~ m~ é maior ou igual a um valor mínimo ou máximo. O equipamento inclui um circuito de correção de realimentação usado para sensoriar o valor de I~ m~ ou I~ p~. O circuito de correção fornece uma corrente de reforço I~ boost~ quando o valor sensoriado de I~ p~ ou I~ m~ for menor ou maior que o valor mínimo ou máximo. I~ boost~ é de preferência mantido proporcional à diferença do valor desejado e I~ p~ ou I~ m~.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/109,504 US6882185B1 (en) | 1998-07-02 | 1998-07-02 | Exponential current generator and method |
PCT/US1999/014695 WO2000002310A1 (en) | 1998-07-02 | 1999-06-30 | Improved exponential current generator and method |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9911731A true BR9911731A (pt) | 2002-01-29 |
Family
ID=22328015
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9911731-2A BR9911731A (pt) | 1998-07-02 | 1999-06-30 | Método e gerador de corrente exponencial aperfeiçoados |
Country Status (9)
Country | Link |
---|---|
US (1) | US6882185B1 (pt) |
EP (1) | EP1093686B1 (pt) |
JP (2) | JP2002520895A (pt) |
AU (1) | AU4843199A (pt) |
BR (1) | BR9911731A (pt) |
DE (1) | DE69927272T2 (pt) |
HK (1) | HK1038112A1 (pt) |
IL (2) | IL140564A0 (pt) |
WO (1) | WO2000002310A1 (pt) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW200505157A (en) * | 2003-07-21 | 2005-02-01 | Realtek Semiconductor Corp | Linear-in-decibel variable gain amplifier |
US7075368B2 (en) * | 2003-09-01 | 2006-07-11 | Realtek Semiconductor Corp. | Linear-in-decibel variable gain amplifier |
US7078972B2 (en) * | 2003-10-01 | 2006-07-18 | Realtek Semiconductor Corp. | Linear decibel-scale variable gain amplifier |
KR100609683B1 (ko) * | 2003-12-26 | 2006-08-08 | 한국전자통신연구원 | 온도 보상이 가능한 cmos지수함수 발생기 회로 |
JP2007142514A (ja) * | 2005-11-15 | 2007-06-07 | Nec Electronics Corp | 可変利得電力増幅器 |
DE102010031575B4 (de) * | 2010-07-20 | 2016-09-29 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verstärkerschaltung und Verfahren |
US8305133B2 (en) * | 2010-10-01 | 2012-11-06 | Texas Instruments Incorporated | Implementing a piecewise-polynomial-continuous function in a translinear circuit |
US9176513B2 (en) | 2014-04-02 | 2015-11-03 | King Fahd University Of Petroleum And Minerals | High dynamic range exponential current generator with MOSFETs |
CN109150116A (zh) * | 2018-08-09 | 2019-01-04 | 西安邮电大学 | 一种射频信号接收机芯片中的低噪声放大器 |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3641450A (en) | 1970-12-15 | 1972-02-08 | Motorola Inc | Gain controlled differential amplifier circuit |
US4335358A (en) * | 1980-01-21 | 1982-06-15 | Signetics Corporation | Class "B" type amplifier |
US4562406A (en) | 1982-09-16 | 1985-12-31 | Ampex Corporation | Current controlled amplifier |
JPS6145612A (ja) * | 1984-08-10 | 1986-03-05 | Toshiba Corp | 差動増幅回路 |
NL8402541A (nl) * | 1984-08-20 | 1986-03-17 | Philips Nv | Versterkerschakeling. |
JP2937316B2 (ja) | 1987-08-28 | 1999-08-23 | 株式会社東芝 | Fm変調器 |
US4963836A (en) | 1989-06-23 | 1990-10-16 | Digital Equipment Corporation | Wide range high stability variable gain amplifier |
US4959622A (en) * | 1989-08-31 | 1990-09-25 | Delco Electronics Corporation | Operational amplifier with precise bias current control |
JPH0821819B2 (ja) * | 1990-08-30 | 1996-03-04 | 三洋電機株式会社 | 増幅回路 |
US5471171A (en) | 1990-10-09 | 1995-11-28 | Kabushiki Kaisha Toshiba | Amplifier device capable of realizing high slew rate with low power consumption |
EP0507388A3 (en) | 1991-04-02 | 1993-01-13 | N.V. Philips' Gloeilampenfabrieken | Differential amplifier with signal-dependent quiescent current control |
US5157350A (en) | 1991-10-31 | 1992-10-20 | Harvey Rubens | Analog multipliers |
US5406223A (en) * | 1992-11-20 | 1995-04-11 | Harris Corporation | Amplifier system for low level sensor signal |
JPH06188640A (ja) * | 1992-12-15 | 1994-07-08 | Rohm Co Ltd | 増幅回路及びその回路を用いたic |
EP0620639B1 (en) | 1993-04-06 | 1999-02-10 | STMicroelectronics S.r.l. | Variable gain amplifier for low supply voltage systems |
DE69313624T2 (de) | 1993-06-30 | 1998-04-02 | Sgs Thomson Microelectronics | Regelbarer Verstärker |
US5451901A (en) | 1994-07-01 | 1995-09-19 | Cirrus Logic Inc. | Transconductance amplifiers and exponential variable gain amplifiers using the same |
JP2555990B2 (ja) * | 1994-08-03 | 1996-11-20 | 日本電気株式会社 | マルチプライヤ |
JP3478359B2 (ja) * | 1995-06-23 | 2003-12-15 | ローム株式会社 | オーディオ信号増幅回路およびこの回路を用いたオーディオ装置 |
US5880631A (en) | 1996-02-28 | 1999-03-09 | Qualcomm Incorporated | High dynamic range variable gain amplifier |
-
1998
- 1998-07-02 US US09/109,504 patent/US6882185B1/en not_active Expired - Lifetime
-
1999
- 1999-06-30 JP JP2000558605A patent/JP2002520895A/ja active Pending
- 1999-06-30 DE DE69927272T patent/DE69927272T2/de not_active Expired - Lifetime
- 1999-06-30 WO PCT/US1999/014695 patent/WO2000002310A1/en active IP Right Grant
- 1999-06-30 AU AU48431/99A patent/AU4843199A/en not_active Abandoned
- 1999-06-30 IL IL14056499A patent/IL140564A0/xx active IP Right Grant
- 1999-06-30 EP EP99932037A patent/EP1093686B1/en not_active Expired - Lifetime
- 1999-06-30 BR BR9911731-2A patent/BR9911731A/pt not_active Application Discontinuation
-
2000
- 2000-12-26 IL IL140564A patent/IL140564A/en not_active IP Right Cessation
-
2001
- 2001-10-15 HK HK01107214A patent/HK1038112A1/xx not_active IP Right Cessation
-
2009
- 2009-12-04 JP JP2009276684A patent/JP2010136377A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE69927272D1 (de) | 2005-10-20 |
JP2002520895A (ja) | 2002-07-09 |
HK1038112A1 (en) | 2002-03-01 |
US6882185B1 (en) | 2005-04-19 |
AU4843199A (en) | 2000-01-24 |
IL140564A (en) | 2007-05-15 |
DE69927272T2 (de) | 2006-06-22 |
JP2010136377A (ja) | 2010-06-17 |
IL140564A0 (en) | 2002-02-10 |
EP1093686A1 (en) | 2001-04-25 |
EP1093686B1 (en) | 2005-09-14 |
WO2000002310A1 (en) | 2000-01-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B07A | Application suspended after 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 |
|
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. |