SE9701760L - Linear power amplifier - Google Patents

Linear power amplifier

Info

Publication number
SE9701760L
SE9701760L SE9701760A SE9701760A SE9701760L SE 9701760 L SE9701760 L SE 9701760L SE 9701760 A SE9701760 A SE 9701760A SE 9701760 A SE9701760 A SE 9701760A SE 9701760 L SE9701760 L SE 9701760L
Authority
SE
Sweden
Prior art keywords
distortion
arrangement
power amplifier
linear power
main amplifier
Prior art date
Application number
SE9701760A
Other languages
Swedish (sv)
Other versions
SE9701760D0 (en
SE519812C2 (en
Inventor
Young Kim
Jong-Tae Park
Hong-Kee Kim
Young-Kon Lee
Seung-Won Chung
Seong-Hoo Lee
Soon-Chul Jeong
Chul-Dong Kim
Ik-Soo Chang
Original Assignee
Samsung Electronics Co 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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of SE9701760D0 publication Critical patent/SE9701760D0/en
Publication of SE9701760L publication Critical patent/SE9701760L/en
Publication of SE519812C2 publication Critical patent/SE519812C2/en

Links

Classifications

    • 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
    • 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
    • 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
    • H03F1/3252—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using multiple parallel paths between input and output
    • 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
    • H03F1/3276—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using the nonlinearity inherent to components, e.g. a diode
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)

Abstract

An arrangement for linearizing an amplifier by a combination of two methods is described. In the first a predistorter 213 supplies harmonics to the main amplifier 214 in such a way as to counteract the distortion. In the second a feedforward arrangement subtracts in 219 a signal derived from the input of the main amplifier from a signal derived from the output to produce a distortion signal which is then subtracted from the main amplifier output to remove remaining distortion. The arrangement may be used in multi-carrier amplification.
SE9701760A 1996-11-04 1997-05-13 Methods and apparatus for linear power amplification SE519812C2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960051910A KR100217416B1 (en) 1995-11-16 1996-11-04 Linear amplifier and method thereof

Publications (3)

Publication Number Publication Date
SE9701760D0 SE9701760D0 (en) 1997-05-13
SE9701760L true SE9701760L (en) 1998-05-05
SE519812C2 SE519812C2 (en) 2003-04-15

Family

ID=19480758

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9701760A SE519812C2 (en) 1996-11-04 1997-05-13 Methods and apparatus for linear power amplification

Country Status (11)

Country Link
JP (1) JP3260295B2 (en)
KR (1) KR100217416B1 (en)
AU (1) AU698665B2 (en)
BR (1) BR9703140B1 (en)
DE (1) DE19720019B4 (en)
FI (1) FI116339B (en)
FR (1) FR2755551B1 (en)
GB (1) GB2318938B (en)
IN (1) IN192286B (en)
NL (1) NL1006031C2 (en)
SE (1) SE519812C2 (en)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6075411A (en) * 1997-12-22 2000-06-13 Telefonaktiebolaget Lm Ericsson Method and apparatus for wideband predistortion linearization
US6363120B1 (en) 1998-06-17 2002-03-26 Lucent Technologies Inc. Apparatus and method for extending the dynamic range of a mixer using feed forward distortion reduction
US6339701B1 (en) 1998-06-17 2002-01-15 Lucent Technologies, Inc. Method and apparatus for extending the dynamic range of a frequency mixer
US6097324A (en) * 1998-06-17 2000-08-01 Lucent Technologies Inc. Method and apparatus for extending the spurious free dynamic range of an analog-to-digital converter
AU3067400A (en) 1999-02-12 2000-08-29 Wireless Systems International Limited Signal processing apparatus
JP2001053552A (en) * 1999-08-10 2001-02-23 Nec Corp Feed-forward amplifier circuit and method for compensating nonlinear distortion in the same
US6392480B1 (en) * 1999-08-19 2002-05-21 Lucent Technologies Inc. Alternating gain and phase control system and method
GB2353646A (en) * 1999-08-27 2001-02-28 Matsushita Electric Ind Co Ltd A multistage amplifier with multistage predistortion and a predistorter
GB2354126B (en) 1999-09-13 2004-07-21 Wireless Systems Int Ltd Signal processing
GB2358748A (en) * 2000-01-31 2001-08-01 Wireless Systems Int Ltd An arrangement in a predistortion or feedforward linearizer for an amplifier in which I and Q components are adjusted to achieve a desired phase and amplitude
US6275106B1 (en) * 2000-02-25 2001-08-14 Spectrian Corporation Spectral distortion monitor for controlling pre-distortion and feed-forward linearization of rf power amplifier
WO2001099316A1 (en) 2000-06-16 2001-12-27 Fujitsu Limited Multi-carrier amplifier
US6496064B2 (en) * 2000-08-15 2002-12-17 Eugene Rzyski Intermodulation product cancellation circuit
US6545487B1 (en) 2000-08-24 2003-04-08 Lucent Technologies Inc. System and method for producing an amplified signal with reduced distortion
US6674324B1 (en) * 2000-08-24 2004-01-06 Lucent Technologies Inc. System and method for producing an amplified signal using plurality of amplitudes across spectrum
JP3850649B2 (en) * 2000-09-22 2006-11-29 株式会社日立国際電気 Distortion compensation amplifier
US6940346B2 (en) 2000-12-04 2005-09-06 Matsushita Electric Industrial Co., Ltd. Feedforward amplifier, communication apparatus, feedforward amplification method, program and medium
EP1249930A3 (en) * 2001-04-10 2004-06-02 Matsushita Electric Industrial Co., Ltd. Predistortion linearizer and predistortion compensation method and program
KR100395502B1 (en) * 2001-08-08 2003-08-25 한국전자통신연구원 Adaptive Feedforward Linear Amplifier
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
GB2395077A (en) * 2002-11-01 2004-05-12 N & L Ltd An amplifier arrangement linearised by predistortion and feedforward; adaptive bias for improved efficiency; thermal overload protection
KR100766201B1 (en) 2005-11-09 2007-10-10 학교법인 포항공과대학교 Apparatus and method for measuring phase change of rf power amplifier
EP3146630B1 (en) 2014-05-23 2020-01-15 Teko Telecom S.r.l. Power amplification system for radiofrequency communications
EP3139556B1 (en) 2014-06-26 2018-10-03 Huawei Technologies Co., Ltd. Interference cancellation device and method
BR112016030000B1 (en) 2014-06-26 2023-01-17 Huawei Technologies., Ltd INTERFERENCE CANCELLATION EQUIPMENT AND METHOD
KR102163050B1 (en) 2015-03-12 2020-10-08 삼성전기주식회사 Power amplifier and method for compensating phase in power amplifier
US11038474B2 (en) 2017-11-01 2021-06-15 Analog Devices Global Unlimited Company Phased array amplifier linearization
WO2020047747A1 (en) 2018-09-04 2020-03-12 北京小米移动软件有限公司 Cell handover method, device and readable storage medium
KR102080202B1 (en) 2019-08-23 2020-02-21 주식회사 패러다임 Power Amplifier

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1495264A (en) * 1975-02-19 1977-12-14 Plessey Co Ltd Amplifier arrangements
US4885551A (en) * 1988-10-31 1989-12-05 American Telephone And Telegraph Company At&T Bell Laboratories Feed forward linear amplifier
US4879519A (en) * 1988-10-31 1989-11-07 American Telephone And Telegraph Company, At&T Bell Labs Predistortion compensated linear amplifier
US4943783A (en) * 1989-07-31 1990-07-24 Nippon Telegraph And Telephone Corporation Feed forward distortion correction circuit
GB2238196A (en) * 1989-11-16 1991-05-22 Motorola Inc Feed forward amplifier with pre-distortion
US4987378A (en) * 1989-11-28 1991-01-22 General Electric Company Feedforward predistortion linearizer
US5023565A (en) * 1990-01-26 1991-06-11 At&T Bell Laboratories Linear amplifier with automatic adjustment of feed forward loop gain and phase
GB9009295D0 (en) * 1990-04-25 1990-06-20 Kenington Peter B Apparatus and method for reducing distortion in amplification
US5130663A (en) * 1991-04-15 1992-07-14 Motorola, Inc. Feed forward amplifier network with frequency swept pilot tone
US5570063A (en) * 1995-05-18 1996-10-29 Spectrian, Inc. RF power amplifier with signal predistortion for improved linearity

Also Published As

Publication number Publication date
JP3260295B2 (en) 2002-02-25
BR9703140A (en) 1998-11-10
AU2014897A (en) 1998-05-07
FI116339B (en) 2005-10-31
FI972005A (en) 1998-05-05
KR970031238A (en) 1997-06-26
GB9709622D0 (en) 1997-07-02
SE9701760D0 (en) 1997-05-13
GB2318938A (en) 1998-05-06
DE19720019A1 (en) 1998-05-14
SE519812C2 (en) 2003-04-15
FI972005A0 (en) 1997-05-12
IN192286B (en) 2004-03-27
FR2755551A1 (en) 1998-05-07
KR100217416B1 (en) 1999-09-01
GB2318938B (en) 1999-07-28
JPH10190361A (en) 1998-07-21
NL1006031A1 (en) 1998-05-08
DE19720019B4 (en) 2006-04-06
FR2755551B1 (en) 2001-09-07
NL1006031C2 (en) 1999-06-17
AU698665B2 (en) 1998-11-05
BR9703140B1 (en) 2011-04-05

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