AU2002211606A1 - Gain linearizer for variable gain amplifiers - Google Patents

Gain linearizer for variable gain amplifiers

Info

Publication number
AU2002211606A1
AU2002211606A1 AU2002211606A AU1160602A AU2002211606A1 AU 2002211606 A1 AU2002211606 A1 AU 2002211606A1 AU 2002211606 A AU2002211606 A AU 2002211606A AU 1160602 A AU1160602 A AU 1160602A AU 2002211606 A1 AU2002211606 A1 AU 2002211606A1
Authority
AU
Australia
Prior art keywords
gain
control signal
related signals
linearizer
exponentially related
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.)
Abandoned
Application number
AU2002211606A
Inventor
Gurkanwal S. Sahota
Brett C. Walker
Eric Zeisel
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
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
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of AU2002211606A1 publication Critical patent/AU2002211606A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/06—Volume compression or expansion in amplifiers having semiconductor devices
    • H03G7/08—Volume compression or expansion in amplifiers having semiconductor devices incorporating negative feedback
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers

Landscapes

  • Amplifiers (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Transmitters (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

Techniques to linearly (in dB) adjust the gains of variable gain elements (i.e., variable gain amplifiers or VGAs) in a receiver or transmitter. An input control signal is provided to a conditioning circuit that conditions the control signal to achieve various signal characteristics. The input control signal is limited to within a particular range of values, temperature compensated, scaled (or normalized) to the supply voltages, shifted with an offset, or manipulated in other fashions. The conditioned signal is then provided to an input stage of a linearizer that generates a set of exponentially related signals. This is achieved using, for example, a differential amplifier in which the conditioned control signal is applied to the inputs of the differential amplifier and the collector currents from the differential amplifier comprises the exponentially related signals. An output stage within the linearizer receives the exponentially related signals and, in response, generates a gain control signal. By approximately matching the output stage to a gain stage of the variable gain element and by using the gain control signal generated by output stage, the gain transfer function of the VGA approximates that of the exponentially related signals.
AU2002211606A 2000-10-10 2001-10-09 Gain linearizer for variable gain amplifiers Abandoned AU2002211606A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/686,265 2000-10-10
US09/686,265 US6711391B1 (en) 2000-10-10 2000-10-10 Gain linearizer for variable gain amplifiers
PCT/US2001/031696 WO2002031973A2 (en) 2000-10-10 2001-10-09 Gain linearizer for variable gain amplifiers

Publications (1)

Publication Number Publication Date
AU2002211606A1 true AU2002211606A1 (en) 2002-04-22

Family

ID=24755615

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2002211606A Abandoned AU2002211606A1 (en) 2000-10-10 2001-10-09 Gain linearizer for variable gain amplifiers

Country Status (12)

Country Link
US (1) US6711391B1 (en)
EP (1) EP1366566B1 (en)
JP (1) JP4008811B2 (en)
KR (1) KR100727335B1 (en)
CN (1) CN100438333C (en)
AT (1) ATE402522T1 (en)
AU (1) AU2002211606A1 (en)
DE (1) DE60135027D1 (en)
MY (1) MY125999A (en)
RU (1) RU2273949C2 (en)
TW (1) TWI235545B (en)
WO (1) WO2002031973A2 (en)

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US7450915B1 (en) * 2003-12-27 2008-11-11 Sequoia Communications Smart transmitter system
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US7496338B1 (en) * 2003-12-29 2009-02-24 Sequoia Communications Multi-segment gain control system
US7522017B1 (en) 2004-04-21 2009-04-21 Sequoia Communications High-Q integrated RF filters
US7148744B2 (en) 2004-06-07 2006-12-12 Agere Systems Inc. Calibration technique for variable-gain amplifiers
US7672648B1 (en) 2004-06-26 2010-03-02 Quintics Holdings System for linear amplitude modulation
US7479815B1 (en) 2005-03-01 2009-01-20 Sequoia Communications PLL with dual edge sensitivity
US7548122B1 (en) 2005-03-01 2009-06-16 Sequoia Communications PLL with switched parameters
US7675379B1 (en) 2005-03-05 2010-03-09 Quintics Holdings Linear wideband phase modulation system
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US7720176B2 (en) * 2005-09-26 2010-05-18 St-Ericsson Sa Edge transceiver architecture and related methods
US20080070520A1 (en) * 2005-10-17 2008-03-20 Mitter Chang S Method And Apparatus For Improving Efficiency Of RF Power Amplifier Using A Power Converter With An Exponential Transfer Function
US20070205200A1 (en) * 2006-03-02 2007-09-06 Brain Box Concepts Soap bar holder and method of supporting a soap bar
US7974374B2 (en) 2006-05-16 2011-07-05 Quintic Holdings Multi-mode VCO for direct FM systems
US7522005B1 (en) 2006-07-28 2009-04-21 Sequoia Communications KFM frequency tracking system using an analog correlator
US7679468B1 (en) 2006-07-28 2010-03-16 Quintic Holdings KFM frequency tracking system using a digital correlator
US7894545B1 (en) 2006-08-14 2011-02-22 Quintic Holdings Time alignment of polar transmitter
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KR100852186B1 (en) * 2006-11-02 2008-08-13 삼성전자주식회사 Wide band programmable variable gain amplifier and rf receiver having the same
US20080169951A1 (en) * 2007-01-17 2008-07-17 Stmicroelectronics, Inc. Direct digital synthesis of transmitter gain and bias control curves
CN101373954B (en) * 2007-08-24 2010-09-08 锐迪科科技有限公司 Method for amplifying voltage signal and operational amplifier
CN101790843B (en) * 2007-08-31 2012-12-26 美国亚德诺半导体公司 Variable automatic limit control (alc) threshold for any desired compression curve
CN101651494B (en) * 2009-09-03 2012-12-19 中兴通讯股份有限公司 Device and method for regulating wave band of dispersion compensator
US20120262233A1 (en) * 2011-04-15 2012-10-18 Fairchild Semiconductor Corporation Mixed signal dynamic range compression
US10075310B2 (en) * 2014-08-28 2018-09-11 Lockheed Martin Corporation Adaptive linearizer
PL3221965T3 (en) * 2014-11-22 2019-04-30 Ericsson Telefon Ab L M Circuits for linearizing an output signal of a non-linear component and related devices and methods
KR101517852B1 (en) * 2015-02-05 2015-05-07 주식회사 웨이브트랙 Mixer mmic with feedback circuit
CN104796103A (en) * 2015-03-30 2015-07-22 苏州锟恩电子科技有限公司 Gain-variable noninverting amplifier device
CN106160684B (en) * 2016-07-05 2018-12-04 天津大学 A kind of high linearity variable gain amplifier
CN110113017B (en) * 2018-02-01 2023-09-08 马维尔亚洲私人有限公司 Variable gain amplifier device and power system
US10749716B2 (en) * 2018-04-09 2020-08-18 Texas Instruments Incorporated Signal path linearizer
US11271535B2 (en) * 2019-02-28 2022-03-08 SiliconIntervention Inc. Analog computer with variable gain
WO2021046654A1 (en) * 2019-09-13 2021-03-18 Aligo Innovation, Societe En Commandite Power amplifier linearizing module and power amplifier system equipped therewith
RU2761856C1 (en) * 2020-12-28 2021-12-13 Акционерное общество "ГлобалИнформСервис" Method for increasing the linearity of high-frequency power amplifiers and apparatus for implementation thereof
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Also Published As

Publication number Publication date
CN1636319A (en) 2005-07-06
EP1366566A2 (en) 2003-12-03
DE60135027D1 (en) 2008-09-04
WO2002031973A2 (en) 2002-04-18
KR20030048428A (en) 2003-06-19
JP4008811B2 (en) 2007-11-14
JP2004511943A (en) 2004-04-15
RU2273949C2 (en) 2006-04-10
CN100438333C (en) 2008-11-26
MY125999A (en) 2006-09-29
EP1366566B1 (en) 2008-07-23
US6711391B1 (en) 2004-03-23
KR100727335B1 (en) 2007-06-12
TWI235545B (en) 2005-07-01
ATE402522T1 (en) 2008-08-15
WO2002031973A3 (en) 2003-09-25

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