GB0325306D0 - Amplifier assembly - Google Patents

Amplifier assembly

Info

Publication number
GB0325306D0
GB0325306D0 GB0325306A GB0325306A GB0325306D0 GB 0325306 D0 GB0325306 D0 GB 0325306D0 GB 0325306 A GB0325306 A GB 0325306A GB 0325306 A GB0325306 A GB 0325306A GB 0325306 D0 GB0325306 D0 GB 0325306D0
Authority
GB
United Kingdom
Prior art keywords
amplifier assembly
amplifier
assembly
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Withdrawn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
GB0325306A
Other versions
GB2396498A (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.)
N & L Ltd
Original Assignee
N & L 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 N & L Ltd filed Critical N & L Ltd
Publication of GB0325306D0 publication Critical patent/GB0325306D0/en
Publication of GB2396498A publication Critical patent/GB2396498A/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Withdrawn legal-status Critical Current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
    • H03F1/3247—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using feedback acting on predistortion circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • 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
    • 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
    • H03F2201/3221—Predistortion by overamplifying in a feedforward stage the distortion signal to have a combined main signal and "negative" distortion to form the predistorted signal for a further stage. so that after amplification in the further stage only the amplified main signal remains
GB0325306A 2002-11-01 2003-10-30 An amplifier arrangement linearised by predistortion and feedforward; adaptive bias for improved efficiency; thermal overload protection Withdrawn GB2396498A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0225459A GB2395077A (en) 2002-11-01 2002-11-01 An amplifier arrangement linearised by predistortion and feedforward; adaptive bias for improved efficiency; thermal overload protection

Publications (2)

Publication Number Publication Date
GB0325306D0 true GB0325306D0 (en) 2003-12-03
GB2396498A GB2396498A (en) 2004-06-23

Family

ID=9946996

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0225459A Withdrawn GB2395077A (en) 2002-11-01 2002-11-01 An amplifier arrangement linearised by predistortion and feedforward; adaptive bias for improved efficiency; thermal overload protection
GB0325306A Withdrawn GB2396498A (en) 2002-11-01 2003-10-30 An amplifier arrangement linearised by predistortion and feedforward; adaptive bias for improved efficiency; thermal overload protection

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0225459A Withdrawn GB2395077A (en) 2002-11-01 2002-11-01 An amplifier arrangement linearised by predistortion and feedforward; adaptive bias for improved efficiency; thermal overload protection

Country Status (3)

Country Link
AU (1) AU2003271959A1 (en)
GB (2) GB2395077A (en)
WO (1) WO2004040751A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2411303A (en) * 2004-02-20 2005-08-24 N & L Ltd A base station RF amplifier with feedback-controlled bias for improved efficiency and linearity
EP2226932B1 (en) 2009-03-02 2013-10-16 Alcatel Lucent Method for amplifying a signal by a power amplifier, power amplifier system, device, computer program product, and digital storage medium thereof
FR2991527B1 (en) 2012-05-30 2014-06-27 Centre Nat Etd Spatiales LINEARIZER CALIBRATION METHOD AND LINEARIZED ELECTRONIC COMPONENT
CN115808614B (en) * 2023-02-09 2023-05-16 四川省华盾防务科技股份有限公司 Power amplifier chip thermal performance monitoring method, system and storage medium

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3101453A (en) * 1957-01-21 1963-08-20 Modern Telephones Great Britai Transistor amplifiers with protective circuit means
US4939786A (en) * 1987-03-09 1990-07-03 Motorola, Inc. Adaptive thermal protection for a power amplifier by remote sense
US5420536A (en) * 1993-03-16 1995-05-30 Victoria University Of Technology Linearized power amplifier
GB2296145B (en) * 1994-12-15 1999-09-22 Nokia Mobile Phones Ltd Radio transmitters and methods of operation
US5570063A (en) * 1995-05-18 1996-10-29 Spectrian, Inc. RF power amplifier with signal predistortion for improved linearity
KR100217416B1 (en) * 1995-11-16 1999-09-01 윤종용 Linear amplifier and method thereof
US5781069A (en) * 1996-05-16 1998-07-14 Xemod, Inc. Pre-post distortion amplifier
US5831479A (en) * 1996-06-13 1998-11-03 Motorola, Inc. Power delivery system and method of controlling the power delivery system for use in a radio frequency system
US5770971A (en) * 1996-07-26 1998-06-23 Northern Telecom Limited Distortion compensation control for a power amplifier
GB2316561B (en) * 1996-08-22 2001-01-03 Motorola Ltd Improved power amplifier and related method
US5850162A (en) * 1997-02-20 1998-12-15 Harris Corporation Linearization of an amplifier employing modified feedforward correction
US5977826A (en) * 1998-03-13 1999-11-02 Behan; Scott T. Cascaded error correction in a feed forward amplifier
US5963091A (en) * 1998-04-01 1999-10-05 Chen; Jiunn-Tsair Article comprising a power amplifier with feed forward linearizer using a RLS parameter tracking algorithm
US6064269A (en) * 1998-07-31 2000-05-16 Motorola, Inc. Power amplifier with variable input voltage source
GB9816820D0 (en) * 1998-08-04 1998-09-30 Koninkl Philips Electronics Nv Orthogonal signal transmitter
GB2352570B (en) * 1999-07-28 2003-12-24 Wireless Systems Int Ltd Distortion reduction
US6359507B1 (en) * 1999-08-18 2002-03-19 Lucent Technologies Inc. Method and apparatus for an automatic predistortion system
US6285252B1 (en) * 1999-09-30 2001-09-04 Harmonic Inc. Apparatus and method for broadband feedforward predistortion

Also Published As

Publication number Publication date
AU2003271959A1 (en) 2004-05-25
GB2395077A (en) 2004-05-12
GB0225459D0 (en) 2002-12-11
WO2004040751A1 (en) 2004-05-13
GB2396498A (en) 2004-06-23

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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)