CA2274529A1 - High dynamic range variable gain amplifier - Google Patents

High dynamic range variable gain amplifier Download PDF

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Publication number
CA2274529A1
CA2274529A1 CA002274529A CA2274529A CA2274529A1 CA 2274529 A1 CA2274529 A1 CA 2274529A1 CA 002274529 A CA002274529 A CA 002274529A CA 2274529 A CA2274529 A CA 2274529A CA 2274529 A1 CA2274529 A1 CA 2274529A1
Authority
CA
Canada
Prior art keywords
amplifier
variable gain
dynamic range
high dynamic
gain amplifier
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002274529A
Other languages
French (fr)
Other versions
CA2274529C (en
Inventor
S. Gurkanwal Sahota
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualcomm Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2274529A1 publication Critical patent/CA2274529A1/en
Application granted granted Critical
Publication of CA2274529C publication Critical patent/CA2274529C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices

Landscapes

  • Control Of Amplification And Gain Control (AREA)
  • Amplifiers (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

A multi-stage low power, high dynamic range variable gain amplifier (100) comprises an input stage (120) cascaded with one or more current amplifier stages (160A, 160B) whereby the gain of each stage (120) may be independently controlled. The input stage (120) may be comprised of a variable transconductance amplifier (227) using variable emitter degeneration. The current amplifier (160A, 160B) may be comprised of a differential Darlington amplifier (510) coupled to a differential cascode amplifier (520). The transconductance amplifier (227) converts an input voltage signal to a current signal. The variable gain amplifier (100) is designed for efficient low power operation.
CA002274529A 1997-01-27 1997-12-19 High dynamic range variable gain amplifier Expired - Fee Related CA2274529C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US789,108 1997-01-27
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 (2)

Publication Number Publication Date
CA2274529A1 true CA2274529A1 (en) 1998-07-30
CA2274529C CA2274529C (en) 2004-07-27

Family

ID=25146617

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002274529A Expired - Fee Related CA2274529C (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)

* Cited by examiner, † Cited by third party
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
EP1715579B1 (en) * 2005-04-19 2010-03-10 Alcatel Lucent Analogue multiplier
US7397306B2 (en) * 2005-11-02 2008-07-08 Marvell World Trade Ltd. High-bandwidth high-gain amplifier
WO2007060625A1 (en) 2005-11-23 2007-05-31 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

Family Cites Families (9)

* Cited by examiner, † Cited by third party
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
EP0587965B1 (en) * 1992-09-16 1999-08-04 STMicroelectronics S.r.l. Differential transconductance stage, dynamically controlled by the input signal's amplitude
EP0632583B1 (en) * 1993-06-30 1997-09-03 STMicroelectronics S.r.l. Variable gain 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
JP2010051011A (en) 2010-03-04
JP2008005538A (en) 2008-01-10
RU2209504C2 (en) 2003-07-27
JP2001509345A (en) 2001-07-10
KR100572187B1 (en) 2006-04-18
KR100654112B1 (en) 2006-12-05
AU5713298A (en) 1998-08-18
CN1124680C (en) 2003-10-15
CN1245598A (en) 2000-02-23
KR20060002023A (en) 2006-01-06
WO1998033272A1 (en) 1998-07-30
HK1023861A1 (en) 2000-09-22
BR9714291A (en) 2000-04-25
KR20000070394A (en) 2000-11-25
CA2274529C (en) 2004-07-27
JP4135988B2 (en) 2008-08-20
AU732076B2 (en) 2001-04-12
JP2008182755A (en) 2008-08-07

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20121219