AU2002223882A1 - Amplifier circuit - Google Patents

Amplifier circuit

Info

Publication number
AU2002223882A1
AU2002223882A1 AU2002223882A AU2388202A AU2002223882A1 AU 2002223882 A1 AU2002223882 A1 AU 2002223882A1 AU 2002223882 A AU2002223882 A AU 2002223882A AU 2388202 A AU2388202 A AU 2388202A AU 2002223882 A1 AU2002223882 A1 AU 2002223882A1
Authority
AU
Australia
Prior art keywords
amplifier circuit
amplifier
circuit
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
AU2002223882A
Inventor
Mark Harris
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 UK Ltd
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 UK Ltd filed Critical Qualcomm UK Ltd
Publication of AU2002223882A1 publication Critical patent/AU2002223882A1/en
Abandoned legal-status Critical Current

Links

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
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
    • H03F1/0216—Continuous control
    • H03F1/0233—Continuous control by using a signal derived from the output signal, e.g. bootstrapping the voltage supply
AU2002223882A 2000-11-24 2001-11-23 Amplifier circuit Abandoned AU2002223882A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0028689 2000-11-24
GBGB0028689.8A GB0028689D0 (en) 2000-11-24 2000-11-24 Amplifier circuit
PCT/GB2001/005182 WO2002043240A1 (en) 2000-11-24 2001-11-23 Amplifier circuit

Publications (1)

Publication Number Publication Date
AU2002223882A1 true AU2002223882A1 (en) 2002-06-03

Family

ID=9903818

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2002223882A Abandoned AU2002223882A1 (en) 2000-11-24 2001-11-23 Amplifier circuit

Country Status (10)

Country Link
US (1) US7196584B2 (en)
EP (1) EP1348254B1 (en)
JP (2) JP2004515101A (en)
CN (1) CN100347951C (en)
AU (1) AU2002223882A1 (en)
BR (1) BR0115599A (en)
CA (1) CA2429740A1 (en)
GB (1) GB0028689D0 (en)
IL (1) IL156052A0 (en)
WO (1) WO2002043240A1 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6725021B1 (en) * 2002-06-20 2004-04-20 Motorola, Inc. Method for tuning an envelope tracking amplification system
GB2393595B (en) 2002-09-26 2007-04-04 Qualcomm A transmitter and a method of calibrating power in signals output from a transmitter
US7221907B2 (en) 2003-02-12 2007-05-22 The Boeing Company On orbit variable power high power amplifiers for a satellite communications system
US8024055B1 (en) 2004-05-15 2011-09-20 Sonos, Inc. Method and system for controlling amplifiers
FI119575B (en) 2004-06-29 2008-12-31 Esju Oy The power supply and method adjust the operating power
GB2425418B (en) * 2005-04-22 2007-09-19 Motorola Inc Amplifier circuit and rf transmitter incorporating the circuit
DE102005061572B4 (en) * 2005-06-28 2008-05-29 Infineon Technologies Ag Power amplifier arrangement, in particular for mobile radio, and method for determining a performance parameter
US7443244B2 (en) * 2005-07-14 2008-10-28 Motorola, Inc. Method and apparatus for controlling a power amplifier supply voltage
WO2007060675A1 (en) * 2005-11-28 2007-05-31 Paragon Communications Ltd. Method and apparatus for optimizing current consumption of amplifiers with power control
US8258872B1 (en) 2007-06-11 2012-09-04 Sonos, Inc. Multi-tier power supply for audio amplifiers
GB0715254D0 (en) 2007-08-03 2007-09-12 Wolfson Ltd Amplifier circuit
US8378746B2 (en) * 2008-07-11 2013-02-19 Integrated Device Technology, Inc Voltage-mode line driving circuit having adaptive impedance matching
US9166533B2 (en) 2009-07-30 2015-10-20 Qualcomm Incorporated Bias current monitor and control mechanism for amplifiers
US8816775B2 (en) * 2012-09-13 2014-08-26 Freescale Semiconductor, Inc. Quiescent current determination using in-package voltage measurements
US9136809B2 (en) 2012-11-30 2015-09-15 Qualcomm Incorporated Digital bias adjustment in a variable supply radio frequency power amplifier
CN103248328B (en) * 2013-05-15 2017-05-24 海能达通信股份有限公司 Power amplifier and utilization method
US9244516B2 (en) 2013-09-30 2016-01-26 Sonos, Inc. Media playback system using standby mode in a mesh network

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0669002B2 (en) * 1986-05-23 1994-08-31 日本電信電話株式会社 High frequency amplifier
US5081425A (en) * 1990-05-24 1992-01-14 E-Systems, Inc. Vswr adaptive power amplifier system
US5642378A (en) * 1994-11-17 1997-06-24 Denheyer; Brian John Dual mode analog and digital cellular phone
GB2301248B (en) * 1995-05-25 2000-08-09 Motorola Gmbh Amplifying circuit and method for determining optimal bias voltages therein
US5710523A (en) * 1996-01-16 1998-01-20 Trw Inc. Low noise-low distortion hemt low noise amplifier (LNA) with monolithic tunable HBT active feedback
GB2316561B (en) * 1996-08-22 2001-01-03 Motorola Ltd Improved power amplifier and related method
JPH10242770A (en) * 1997-02-28 1998-09-11 Akita Denshi Kk Amplifier circuit and its control method, amplifier circuit module and portable telephone set
US6148220A (en) * 1997-04-25 2000-11-14 Triquint Semiconductor, Inc. Battery life extending technique for mobile wireless applications
JPH10322144A (en) * 1997-05-16 1998-12-04 Matsushita Electric Ind Co Ltd Power amplifier and method for adjusting the same
DE19732437C1 (en) * 1997-07-28 1998-12-24 Siemens Ag Transistor amplifier stage
US5977883A (en) * 1997-07-30 1999-11-02 Leonard; William H. Traffic light control apparatus for emergency vehicles
US6025754A (en) * 1997-11-03 2000-02-15 Harris Corporation Envelope modulated amplifier bias control and method
US6223056B1 (en) * 1997-12-31 2001-04-24 Samsung Electronics Co., Ltd. Systems and methods for dynamically controlling a variable power amplifier
US6081161A (en) * 1998-05-18 2000-06-27 Omnipoint Corporation Amplifier with dynamatically adaptable supply voltage
JP3314724B2 (en) * 1998-06-02 2002-08-12 日本電気株式会社 Power amplifier circuit and automatic power control method
US6327462B1 (en) * 1998-12-29 2001-12-04 Conexant Systems, Inc. System and method for dynamically varying operational parameters of an amplifier
US6043707A (en) * 1999-01-07 2000-03-28 Motorola, Inc. Method and apparatus for operating a radio-frequency power amplifier as a variable-class linear amplifier
US6198347B1 (en) * 1999-07-29 2001-03-06 Tropian, Inc. Driving circuits for switch mode RF power amplifiers
US6630867B2 (en) * 2000-02-24 2003-10-07 Skyworks Solutions, Inc. Power amplifier with provisions for varying operating voltage based upon power amplifier output power
JP2002151982A (en) * 2000-11-15 2002-05-24 Hitachi Ltd High frequency power amplifier circuit and wireless communication unit, and wireless communication system
US6614309B1 (en) * 2002-02-21 2003-09-02 Ericsson Inc. Dynamic bias controller for power amplifier circuits
US6794935B2 (en) * 2002-10-17 2004-09-21 Motorola Inc. Power amplification circuit and method for supplying power at a plurality of desired power output levels
US6897730B2 (en) * 2003-03-04 2005-05-24 Silicon Laboratories Inc. Method and apparatus for controlling the output power of a power amplifier

Also Published As

Publication number Publication date
CN1488189A (en) 2004-04-07
CN100347951C (en) 2007-11-07
EP1348254A1 (en) 2003-10-01
US20040113695A1 (en) 2004-06-17
CA2429740A1 (en) 2002-05-30
IL156052A0 (en) 2003-12-23
JP5155265B2 (en) 2013-03-06
JP2004515101A (en) 2004-05-20
WO2002043240A1 (en) 2002-05-30
GB0028689D0 (en) 2001-01-10
US7196584B2 (en) 2007-03-27
JP2009296633A (en) 2009-12-17
BR0115599A (en) 2003-09-02
EP1348254B1 (en) 2014-11-05

Similar Documents

Publication Publication Date Title
AU2001228678A1 (en) Amplifier arrangement
EP1122882A3 (en) Amplifier circuit
AU2001236895A1 (en) Integrated circuit
AU2000267458A1 (en) Hypercomputer
EP1292020A4 (en) Amplifier circuit
AU2001239310A1 (en) Decahydro-isoquinolines
AU2001220246A1 (en) Neckphone
AU2002223882A1 (en) Amplifier circuit
AU2002211794A1 (en) Audio on location
AU2001232092A1 (en) Amplifier
AU5911200A (en) Circuit
AU2001265871A1 (en) Substituted sulfonylaminopyrimidines
AU2001254731A1 (en) Substituted phenyluracils
AU2001258255A1 (en) Substituted benzoylcyclohexenones
GB0006485D0 (en) An amplifier
AU1658301A (en) Multi-stage amplifier circuit
AUPR752101A0 (en) Amplifier improvements
AU4430101A (en) Loudspeakers
AU2001226668A1 (en) Crankshaft-starter-generator
GB9906973D0 (en) Sense amplifier circuit
AU6047201A (en) Loudspeaker
AU2001276507A1 (en) Power amplifier arrangement
AU2003301490A1 (en) Automatic-bias amplifier circuit
AU2002223604A1 (en) Substituted phenyluracils
AU2001250569A1 (en) An account