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GB0815547D0 - Linearisation device and method - Google Patents

Linearisation device and method

Info

Publication number
GB0815547D0
GB0815547D0 GBGB0815547.5A GB0815547A GB0815547D0 GB 0815547 D0 GB0815547 D0 GB 0815547D0 GB 0815547 A GB0815547 A GB 0815547A GB 0815547 D0 GB0815547 D0 GB 0815547D0
Authority
GB
United Kingdom
Prior art keywords
linearisation
linearisation device
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.)
Withdrawn
Application number
GBGB0815547.5A
Other versions
GB2463015A (en
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.)
Roke Manor Research Ltd
Original Assignee
Roke Manor Research 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 Roke Manor Research Ltd filed Critical Roke Manor Research Ltd
Priority to GB0815547A priority Critical patent/GB2463015A/en
Publication of GB0815547D0 publication Critical patent/GB0815547D0/en
Publication of GB2463015A publication Critical patent/GB2463015A/en
Withdrawn legal-status Critical Current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
    • H03F1/3258—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits based on polynomial terms
    • 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
    • H03F1/3223—Modifications of amplifiers to reduce non-linear distortion using feed-forward
    • 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
    • H03F1/3223—Modifications of amplifiers to reduce non-linear distortion using feed-forward
    • H03F1/3229—Modifications of amplifiers to reduce non-linear distortion using feed-forward using a loop for error extraction and another loop for error subtraction
    • 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
    • H03F1/3247—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using feedback acting on predistortion circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
    • H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
    • H03F2201/3209—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion the amplifier comprising means for compensating memory effects
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
    • H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
    • H03F2201/3212—Using a control circuit to adjust amplitude and phase of a signal in a signal path
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
    • H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
    • H03F2201/3224—Predistortion being done for compensating memory effects

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Amplifiers (AREA)
GB0815547A 2008-08-27 2008-08-27 An RF transmitter with distortion reduction by feedforward of a model-derived error signal Withdrawn GB2463015A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0815547A GB2463015A (en) 2008-08-27 2008-08-27 An RF transmitter with distortion reduction by feedforward of a model-derived error signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0815547A GB2463015A (en) 2008-08-27 2008-08-27 An RF transmitter with distortion reduction by feedforward of a model-derived error signal

Publications (2)

Publication Number Publication Date
GB0815547D0 true GB0815547D0 (en) 2008-10-01
GB2463015A GB2463015A (en) 2010-03-03

Family

ID=39846838

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0815547A Withdrawn GB2463015A (en) 2008-08-27 2008-08-27 An RF transmitter with distortion reduction by feedforward of a model-derived error signal

Country Status (1)

Country Link
GB (1) GB2463015A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220200643A1 (en) * 2020-12-23 2022-06-23 Intel Corporation Method and system for digital feed-forward linearization

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5898338A (en) * 1996-09-20 1999-04-27 Spectrian Adaptive digital predistortion linearization and feed-forward correction of RF power amplifier
US5959500A (en) * 1998-01-26 1999-09-28 Glenayre Electronics, Inc. Model-based adaptive feedforward amplifier linearizer
US6188732B1 (en) * 1998-10-19 2001-02-13 Samsung Electronics Co., Ltd. Digital feedforward amplifier for use in an RF transmitter and method of operation
KR100548763B1 (en) * 2000-07-20 2006-02-06 엘지전자 주식회사 Base station transmit unit with feed-forward mode linearization unit
US6934341B2 (en) * 2000-08-29 2005-08-23 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for plurality signal generation
GB2385730A (en) * 2002-02-20 2003-08-27 Motorola Inc An apparatus and method for power amplifier linearisation
US6801086B1 (en) * 2002-04-03 2004-10-05 Andrew Corporation Adaptive digital pre-distortion using amplifier model that incorporates frequency-dependent non-linearities
JP3502087B2 (en) * 2002-05-14 2004-03-02 松下電器産業株式会社 Hybrid distortion compensation method and hybrid distortion compensation device
GB2388984B (en) * 2002-05-24 2005-10-05 Wireless Systems Int Ltd Signal correction by predistortion
US7333561B2 (en) * 2002-06-28 2008-02-19 Motorola, Inc. Postdistortion amplifier with predistorted postdistortion
US7577211B2 (en) * 2004-03-01 2009-08-18 Powerwave Technologies, Inc. Digital predistortion system and method for linearizing an RF power amplifier with nonlinear gain characteristics and memory effects
US7606322B2 (en) * 2004-10-07 2009-10-20 Microelectronics Technology Inc. Digital pre-distortion technique using nonlinear filters

Also Published As

Publication number Publication date
GB2463015A (en) 2010-03-03

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)