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AU2001232092A1 - Amplifier - Google Patents

Amplifier

Info

Publication number
AU2001232092A1
AU2001232092A1 AU2001232092A AU3209201A AU2001232092A1 AU 2001232092 A1 AU2001232092 A1 AU 2001232092A1 AU 2001232092 A AU2001232092 A AU 2001232092A AU 3209201 A AU3209201 A AU 3209201A AU 2001232092 A1 AU2001232092 A1 AU 2001232092A1
Authority
AU
Australia
Prior art keywords
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.)
Abandoned
Application number
AU2001232092A
Inventor
Peter Kenington
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.)
Wireless Systems International Ltd
Original Assignee
Wireless Systems International 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 Wireless Systems International Ltd filed Critical Wireless Systems International Ltd
Publication of AU2001232092A1 publication Critical patent/AU2001232092A1/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
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • H03F1/3282—Acting on the phase and the amplitude of the input signal
    • 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
    • H03F1/0261—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 polarisation voltage or current, e.g. gliding Class A

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Amplifiers (AREA)
AU2001232092A 2000-02-24 2001-02-13 Amplifier Abandoned AU2001232092A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0004419 2000-02-24
GB0004419A GB2359679B (en) 2000-02-24 2000-02-24 Amplifier
PCT/GB2001/000583 WO2001063744A2 (en) 2000-02-24 2001-02-13 Phasen- und frequenzmodulator

Publications (1)

Publication Number Publication Date
AU2001232092A1 true AU2001232092A1 (en) 2001-09-03

Family

ID=9886348

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001232092A Abandoned AU2001232092A1 (en) 2000-02-24 2001-02-13 Amplifier

Country Status (4)

Country Link
US (1) US6847259B2 (en)
AU (1) AU2001232092A1 (en)
GB (1) GB2359679B (en)
WO (1) WO2001063744A2 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8811917B2 (en) 2002-05-01 2014-08-19 Dali Systems Co. Ltd. Digital hybrid mode power amplifier system
US8472897B1 (en) * 2006-12-22 2013-06-25 Dali Systems Co. Ltd. Power amplifier predistortion methods and apparatus
US6985704B2 (en) 2002-05-01 2006-01-10 Dali Yang System and method for digital memorized predistortion for wireless communication
US8380143B2 (en) 2002-05-01 2013-02-19 Dali Systems Co. Ltd Power amplifier time-delay invariant predistortion methods and apparatus
DE102005006162B3 (en) * 2005-02-10 2006-08-17 Infineon Technologies Ag Transceiver with an adjustable predistortion having polar modulator
US7535297B2 (en) * 2006-02-27 2009-05-19 Xinghao Chen Architecture and method for improving efficiency of a class-A power amplifier by dynamically scaling biasing current thereof as well as synchronously compensating gain thereof in order to maintain overall constant gain of the class-A power amplifier at all biasing configurations thereof
CN101479956B (en) 2006-04-28 2013-07-31 大力系统有限公司 High Efficiency Linearized Power Amplifier for Wireless Communications
CN104202279A (en) 2006-12-26 2014-12-10 大力系统有限公司 Method and system for baseband predistortion linearization in multi-channel wideband communication systems
FR2948513B1 (en) * 2009-07-24 2011-09-30 St Microelectronics Sa METHOD AND DEVICE FOR POWER AMPLIFICATION OF A RADIO FREQUENCY SIGNAL
US8682338B2 (en) 2010-09-14 2014-03-25 Dali Systems Co., Ltd. Remotely reconfigurable distributed antenna system and methods
WO2015088857A1 (en) * 2013-12-09 2015-06-18 Marvell World Trade Ltd. Power amplifier with wide band am-am feedback and digital pre-distortion
JP2016220130A (en) * 2015-05-25 2016-12-22 三菱電機株式会社 amplifier
EP3335314B1 (en) 2015-08-14 2025-05-21 Viasat, Inc. Digital dynamic bias circuit
US10116264B1 (en) 2017-05-31 2018-10-30 Corning Optical Communications Wireless Ltd Calibrating a power amplifier such as in a remote unit in a wireless distribution system (WDS)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3895316A (en) 1973-08-29 1975-07-15 W P Instr Inc Complex tone modulation
US4462004A (en) * 1982-03-18 1984-07-24 At&T Bell Laboratories Dynamic class-4 FET amplifier
US4761798A (en) 1987-04-02 1988-08-02 Itt Aerospace Optical Baseband phase modulator apparatus employing digital techniques
JP2513289B2 (en) 1989-01-06 1996-07-03 日本電気株式会社 Modulator
US5093636A (en) * 1990-09-25 1992-03-03 Hewlett-Packard Company Phase based vector modulator
US5329260A (en) * 1992-07-17 1994-07-12 Ii Morrow Inc. Numerically-controlled modulated oscillator and modulation method
US5886572A (en) * 1997-07-25 1999-03-23 Motorola, Inc. Method and apparatus for reducing distortion in a power amplifier
US6084468A (en) * 1997-10-06 2000-07-04 Motorola, Inc. Method and apparatus for high efficiency wideband power amplification
US6078628A (en) * 1998-03-13 2000-06-20 Conexant Systems, Inc. Non-linear constant envelope modulator and transmit architecture
US6445249B1 (en) * 2001-08-08 2002-09-03 Motorola, Inc. Modification of phase component of error signal to reduce variation of phase component of output signal of power amplifier

Also Published As

Publication number Publication date
GB2359679A (en) 2001-08-29
GB2359679B (en) 2004-03-10
US6847259B2 (en) 2005-01-25
WO2001063744A2 (en) 2001-08-30
US20030112068A1 (en) 2003-06-19
GB0004419D0 (en) 2000-04-12
WO2001063744A3 (en) 2002-05-16

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