WO2008088025A1 - Amplification circuit and radio communication device - Google Patents

Amplification circuit and radio communication device Download PDF

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Publication number
WO2008088025A1
WO2008088025A1 PCT/JP2008/050543 JP2008050543W WO2008088025A1 WO 2008088025 A1 WO2008088025 A1 WO 2008088025A1 JP 2008050543 W JP2008050543 W JP 2008050543W WO 2008088025 A1 WO2008088025 A1 WO 2008088025A1
Authority
WO
WIPO (PCT)
Prior art keywords
amplifier
power modulation
unit
amplification circuit
communication device
Prior art date
Application number
PCT/JP2008/050543
Other languages
French (fr)
Japanese (ja)
Inventor
Takashi Fukuoka
Akira Sano
Original Assignee
Sumitomo Electric Industries, Ltd.
Keio University
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 Sumitomo Electric Industries, Ltd., Keio University filed Critical Sumitomo Electric Industries, Ltd.
Publication of WO2008088025A1 publication Critical patent/WO2008088025A1/en

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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
    • 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
    • H03F1/0222—Continuous control by using a signal derived from the input signal

Abstract

It is possible to obtain power modulation characteristic at which the efficiency is maximum and the difference is minimum. An amplification circuit includes: a power modulation unit (31) which decides a power modulation voltage v(n) supplied to an amplifier (22) according to an amplifier input signal u(n); a distortion compensation unit (30) which performs distortion compensation of the amplifier (22) according to an amplifier model (32a); and a control unit (32) which controls the power modulation unit (31) and the distortion compensation unit (30). The control unit (32) is configured so as to identify the amplifier model (32a) according to the output signal z(n) and the input signal U(n) of the amplifier (22) and the power modulation voltage v(n) supplied to the amplifier (22) and to control a parameter for deciding the power modulation voltage v(n) according to the amplifier model (32a).
PCT/JP2008/050543 2007-01-19 2008-01-17 Amplification circuit and radio communication device WO2008088025A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-010181 2007-01-19
JP2007010181A JP2008177899A (en) 2007-01-19 2007-01-19 Amplifier circuit, and radio communication equipment

Publications (1)

Publication Number Publication Date
WO2008088025A1 true WO2008088025A1 (en) 2008-07-24

Family

ID=39636026

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/050543 WO2008088025A1 (en) 2007-01-19 2008-01-17 Amplification circuit and radio communication device

Country Status (3)

Country Link
JP (1) JP2008177899A (en)
TW (1) TW200838125A (en)
WO (1) WO2008088025A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2290811A1 (en) * 2009-08-05 2011-03-02 STmicroelectronics SA Digital predistorter for variable supply amplifier

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5115979B2 (en) * 2008-07-24 2013-01-09 日本無線株式会社 Predistorter
JP2010166453A (en) * 2009-01-16 2010-07-29 Sumitomo Electric Ind Ltd Distortion compensating apparatus and radio base station
JP5260335B2 (en) * 2009-01-23 2013-08-14 日本無線株式会社 Predistorter
BRPI0924414A2 (en) 2009-03-09 2016-01-26 Zte Wistron Telecom Ab "Method and apparatus for linearisation of a nonlinear power amplifier"
JP2010278992A (en) * 2009-06-01 2010-12-09 Panasonic Corp Rf amplification apparatus
EP2541760A4 (en) * 2010-02-24 2017-02-08 Sumitomo Electric Industries, Ltd. Amplifying device, signal processing device, wireless communication device, connector mounting structure, and coaxial connector
JP2011176529A (en) * 2010-02-24 2011-09-08 Sumitomo Electric Ind Ltd Amplifier and signal processing apparatus
WO2012086830A1 (en) * 2010-12-20 2012-06-28 日本電気株式会社 Amplifier device and method of controlling same
GB2500708B (en) * 2012-03-30 2016-04-13 Nujira Ltd Determination of envelope shaping and signal path predistortion of an ET amplification stage using device characterisation data
JP2014049939A (en) * 2012-08-31 2014-03-17 Japan Radio Co Ltd Nonlinear compensation device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001511614A (en) * 1997-07-28 2001-08-14 ローデ ウント シユバルツ ゲーエムベーハー ウント コンパニー カーゲー Method and apparatus for measuring distortion of high frequency power amplifier, and method and means for automatic equalization of high frequency power amplifier
JP2005253045A (en) * 2004-02-03 2005-09-15 Ntt Docomo Inc Power series type predistorter for multiple frequency bands
JP2005269440A (en) * 2004-03-19 2005-09-29 Matsushita Electric Ind Co Ltd Polar modulation transmitter and polar modulation method
JP2006080931A (en) * 2004-09-10 2006-03-23 Hitachi Communication Technologies Ltd Delay synchronization loop circuit, digital pre-distortion type transmitter, and radio base station

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001511614A (en) * 1997-07-28 2001-08-14 ローデ ウント シユバルツ ゲーエムベーハー ウント コンパニー カーゲー Method and apparatus for measuring distortion of high frequency power amplifier, and method and means for automatic equalization of high frequency power amplifier
JP2005253045A (en) * 2004-02-03 2005-09-15 Ntt Docomo Inc Power series type predistorter for multiple frequency bands
JP2005269440A (en) * 2004-03-19 2005-09-29 Matsushita Electric Ind Co Ltd Polar modulation transmitter and polar modulation method
JP2006080931A (en) * 2004-09-10 2006-03-23 Hitachi Communication Technologies Ltd Delay synchronization loop circuit, digital pre-distortion type transmitter, and radio base station

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2290811A1 (en) * 2009-08-05 2011-03-02 STmicroelectronics SA Digital predistorter for variable supply amplifier
US8411792B2 (en) 2009-08-05 2013-04-02 Stmicroelectronics S.A. Digital predistorter for variable supply amplifier

Also Published As

Publication number Publication date
JP2008177899A (en) 2008-07-31
TW200838125A (en) 2008-09-16

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