BR9714291A - High dynamic range variable gain amplifier - Google Patents

High dynamic range variable gain amplifier

Info

Publication number
BR9714291A
BR9714291A BR9714291-3A BR9714291A BR9714291A BR 9714291 A BR9714291 A BR 9714291A BR 9714291 A BR9714291 A BR 9714291A BR 9714291 A BR9714291 A BR 9714291A
Authority
BR
Brazil
Prior art keywords
amplifier
variable gain
high dynamic
gain amplifier
stage
Prior art date
Application number
BR9714291-3A
Other languages
Portuguese (pt)
Inventor
Sahota S Gurkanwal
Original Assignee
Qualcomm Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/789,108 external-priority patent/US5880631A/en
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of BR9714291A publication Critical patent/BR9714291A/en

Links

Classifications

    • 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
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices

Abstract

Patente de Invenção: AMPLIFICADOR DE GANHO VARIáVEL DE ELEVADA FAIXA DINâMICA. Um amplificador (100) de ganho variável, de múltiplos estágios, baixa potência e elevada faixa dinâmica compreende um estágio de alimentação (120) em cascata com um ou mais estágios de amplificador de corrente (160A, 160B), pelo que o ganho de cada estágio (120) pode ser independentemente controlado. O estágio de alimentação (120) pode ser constituído por um amplificador de transcodutância variável (227), utilizando degeneração de emissor variável. O amplificador de corrente (160A, 160B) pode ser constituído por um amplificador diferencial Darlington (510) acoplado a um amplificador diferencial em cascata (520). O amplificador de transcodutância (227) converte um sinal de voltagem de alimentação para um sinal de corrente. O amplificador de ganho variável (100) é projetado para operação eficiente em baixa potência.Invention Patent: HIGH DYNAMIC VARIABLE GAIN AMPLIFIER. A multi-stage, low power, high dynamic range variable gain amplifier (100) comprises a cascading power stage (120) with one or more current amplifier stages (160A, 160B), so the gain of each stage (120) can be independently controlled. The power stage (120) can be constituted by a variable transcoductance amplifier (227), using degeneration of variable emitter. The current amplifier (160A, 160B) can consist of a Darlington differential amplifier (510) coupled to a cascade differential amplifier (520). The transcoductance amplifier (227) converts a supply voltage signal to a current signal. The variable gain amplifier (100) is designed for efficient low power operation.

BR9714291-3A 1997-01-27 1997-12-19 High dynamic range variable gain amplifier BR9714291A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/789,108 US5880631A (en) 1996-02-28 1997-01-27 High dynamic range variable gain amplifier
PCT/US1997/023657 WO1998033272A1 (en) 1997-01-27 1997-12-19 High dynamic range variable gain amplifier

Publications (1)

Publication Number Publication Date
BR9714291A true BR9714291A (en) 2000-04-25

Family

ID=25146617

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9714291-3A BR9714291A (en) 1997-01-27 1997-12-19 High dynamic range variable gain amplifier

Country Status (9)

Country Link
JP (4) JP4135988B2 (en)
KR (2) KR100572187B1 (en)
CN (1) CN1124680C (en)
AU (1) AU732076B2 (en)
BR (1) BR9714291A (en)
CA (1) CA2274529C (en)
HK (1) HK1023861A1 (en)
RU (1) RU2209504C2 (en)
WO (1) WO1998033272A1 (en)

Families Citing this family (18)

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Publication number Priority date Publication date Assignee Title
GB2357913A (en) * 1999-12-24 2001-07-04 Ericsson Telefon Ab L M Conditioning a gain control signal so that an output is dB linear
CN1741375B (en) * 2004-08-26 2010-10-27 瑞昱半导体股份有限公司 Amplified circuit capable of dynamic regulating supply voltage
DE602005019855D1 (en) * 2005-04-19 2010-04-22 Alcatel Lucent Analog multiplier
US7397306B2 (en) * 2005-11-02 2008-07-08 Marvell World Trade Ltd. High-bandwidth high-gain amplifier
EP1955438A1 (en) 2005-11-23 2008-08-13 Nxp B.V. A monotonic variable gain amplifier and an automatic gain control circuit
CN101350605B (en) * 2008-09-12 2011-09-28 东南大学 Improved bipolar type variable gain amplifier with minimum gain control
US7944311B1 (en) * 2009-12-17 2011-05-17 Samsung Electro-Mechanics Company, Ltd. Feedback biasing for cascode amplifiers
EP2472723B1 (en) * 2011-01-04 2015-12-16 ams AG Amplifier with non-linear current mirror
CN103051298B (en) * 2011-10-17 2016-07-06 中国科学院微电子研究所 Programmable Gain Amplifier Circuit and programmable gain amplifier
US9071136B2 (en) * 2012-03-30 2015-06-30 Qualcomm Incorporated System and method for suppression of peaking in an external LC filter of a buck regulator
RU2534972C1 (en) * 2013-04-12 2014-12-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Южно-Российский государственный университет экономики и сервиса" (ФГБОУ ВПО "ЮРГУЭС") Broadband non-inverting amplifier with low non-linear noise and harmonic distortion
RU2519348C1 (en) * 2013-05-14 2014-06-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Южно-Российский государственный университет экономики и сервиса" (ФГБОУ ВПО "ЮРГУЭС") Controlled amplifier and analogue signal mixer based on darlington differential stage
CN103647532A (en) * 2013-11-26 2014-03-19 苏州贝克微电子有限公司 Low-voltage folding-type current signal modulator
CN105353295A (en) * 2015-12-01 2016-02-24 无锡比迅科技有限公司 Operation amplifier gain measurement circuit
RU2614345C1 (en) * 2015-12-21 2017-03-24 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Поволжский государственный технологический университет" Method of exapanding dynamic range in radio systems
US9735738B2 (en) * 2016-01-06 2017-08-15 Analog Devices Global Low-voltage low-power variable gain amplifier
CN110289822A (en) * 2019-06-27 2019-09-27 电子科技大学 A kind of broadband Larger Dynamic auto-gain circuit
RU2771479C1 (en) * 2021-05-12 2022-05-04 Общество с ограниченной ответственностью "ТРИУМФ АУДИО" Symmetric feedback amplifier

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Publication number Priority date Publication date Assignee Title
JP2937316B2 (en) * 1987-08-28 1999-08-23 株式会社東芝 FM modulator
JPH077891B2 (en) * 1988-01-09 1995-01-30 ローム株式会社 Electronic volume circuit
JPH0281505A (en) * 1988-09-19 1990-03-22 Hitachi Ltd Variable gain amplifier
US5157350A (en) * 1991-10-31 1992-10-20 Harvey Rubens Analog multipliers
JPH05218764A (en) * 1992-02-03 1993-08-27 Hitachi Ltd Electronic volume
DE69229731T2 (en) * 1992-09-16 1999-12-23 St Microelectronics Srl Transconductance differential amplifier dynamically controlled by the input signal
DE69313624T2 (en) * 1993-06-30 1998-04-02 Sgs Thomson Microelectronics Adjustable amplifier
US5469115A (en) * 1994-04-28 1995-11-21 Qualcomm Incorporated Method and apparatus for automatic gain control in a digital receiver
JPH08130428A (en) * 1994-10-28 1996-05-21 Sony Corp Variable gain amplifier

Also Published As

Publication number Publication date
JP2008005538A (en) 2008-01-10
KR100654112B1 (en) 2006-12-05
AU5713298A (en) 1998-08-18
JP2010051011A (en) 2010-03-04
AU732076B2 (en) 2001-04-12
JP2001509345A (en) 2001-07-10
KR100572187B1 (en) 2006-04-18
CN1245598A (en) 2000-02-23
KR20060002023A (en) 2006-01-06
CA2274529C (en) 2004-07-27
HK1023861A1 (en) 2000-09-22
RU2209504C2 (en) 2003-07-27
JP4135988B2 (en) 2008-08-20
KR20000070394A (en) 2000-11-25
CN1124680C (en) 2003-10-15
WO1998033272A1 (en) 1998-07-30
CA2274529A1 (en) 1998-07-30
JP2008182755A (en) 2008-08-07

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Legal Events

Date Code Title Description
B08F Application fees: dismissal - article 86 of industrial property law
B08G Application fees: restoration
B06A Notification to applicant to reply to the report for non-patentability or inadequacy of the application according art. 36 industrial patent law
B09A Decision: intention to grant
B16A Patent or certificate of addition of invention granted

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 06/05/2008, OBSERVADAS AS CONDICOES LEGAIS.

B24C Patent annual fee: request for for restoration

Free format text: REFERENTE A 14A E 15A ANUIDADE(S), CONFORME ART. 87 DA LPI 9.279.

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time
B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)