WO2005043747A3 - High linearity doherty communication amplifier with bias control - Google Patents

High linearity doherty communication amplifier with bias control Download PDF

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Publication number
WO2005043747A3
WO2005043747A3 PCT/US2004/034797 US2004034797W WO2005043747A3 WO 2005043747 A3 WO2005043747 A3 WO 2005043747A3 US 2004034797 W US2004034797 W US 2004034797W WO 2005043747 A3 WO2005043747 A3 WO 2005043747A3
Authority
WO
WIPO (PCT)
Prior art keywords
amplifier
power
control signal
voltage control
power amplifier
Prior art date
Application number
PCT/US2004/034797
Other languages
French (fr)
Other versions
WO2005043747A2 (en
Inventor
Youngwoo Kwon
Junghyun Kim
Original Assignee
Wavics Inc
Youngwoo Kwon
Junghyun Kim
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
Priority to US10/690,923 priority Critical
Priority to US10/690,923 priority patent/US7053706B2/en
Application filed by Wavics Inc, Youngwoo Kwon, Junghyun Kim filed Critical Wavics Inc
Publication of WO2005043747A2 publication Critical patent/WO2005043747A2/en
Publication of WO2005043747A3 publication Critical patent/WO2005043747A3/en

Links

Classifications

    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/02Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0288Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers using a main and one or several auxiliary peaking amplifiers whereby the load is connected to the main amplifier using an impedance inverter, e.g. Doherty amplifiers

Abstract

The present invention relates to bias control of a power amplification circuit of a mobile device for improving the efficiency and the linearity properties of the power amplifier. In one embodiment, the power amplifier improves these properties by receiving a voltage control signal to bias a supplemental amplifier so that the power amplifier operates in a Doherty mode in a low output power range and in a non-Doherty mode in a high output power range. In the non-Doherty mode, the supplemental amplifier is biased as a class AB amplifier via the received voltage control signal to satisfy the non-linear operational requirements of the power amplifier in the high output power range. The power amplifier generates the voltage control signal based upon power levels of signals received from a remote base station.
PCT/US2004/034797 2002-02-01 2004-10-19 High linearity doherty communication amplifier with bias control WO2005043747A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US10/690,923 2003-10-21
US10/690,923 US7053706B2 (en) 2002-02-01 2003-10-21 High linearity doherty communication amplifier with bias control

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2006536770A JP4860476B2 (en) 2003-10-21 2004-10-19 High linearity Doherty communication amplifier with bias control
GB0605973A GB2421862B (en) 2003-10-21 2004-10-19 High linearity doherty communication amplifier with bias control
CN2004800310591A CN101164229B (en) 2003-10-21 2004-10-19 High linearity doherty communication amplifier with bias control
DE112004001976T DE112004001976T5 (en) 2003-10-21 2004-10-19 High linearity Doherty communication amplifier with bias control

Publications (2)

Publication Number Publication Date
WO2005043747A2 WO2005043747A2 (en) 2005-05-12
WO2005043747A3 true WO2005043747A3 (en) 2005-09-09

Family

ID=34549861

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/034797 WO2005043747A2 (en) 2002-02-01 2004-10-19 High linearity doherty communication amplifier with bias control

Country Status (5)

Country Link
JP (1) JP4860476B2 (en)
CN (1) CN101164229B (en)
DE (1) DE112004001976T5 (en)
GB (1) GB2421862B (en)
WO (1) WO2005043747A2 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4927351B2 (en) * 2005-05-27 2012-05-09 ルネサスエレクトロニクス株式会社 Doherty amplifier
JP2008035487A (en) * 2006-06-19 2008-02-14 Renesas Technology Corp Rf power amplifier
JP5049562B2 (en) * 2006-11-17 2012-10-17 株式会社日立国際電気 Power amplifier
JP5217182B2 (en) * 2007-02-22 2013-06-19 富士通株式会社 High frequency amplifier circuit
JP2008258986A (en) * 2007-04-05 2008-10-23 Japan Radio Co Ltd High frequency amplifier circuit
JP5705122B2 (en) * 2009-10-23 2015-04-22 日本碍子株式会社 Doherty amplifier synthesizer
CN102064774B (en) * 2009-11-18 2013-11-06 中兴通讯股份有限公司 Implementation method of power amplifying circuit and power amplifying device
US20120013401A1 (en) * 2010-07-14 2012-01-19 Avago Technologies Wireless Ip (Singapore) Pte. Ltd. Power amplifier with selectable load impedance and method of amplifying a signal with selectable load impedance
CN102158177A (en) * 2011-04-29 2011-08-17 中兴通讯股份有限公司 Doherty power amplifier and power amplifying method
US8829998B2 (en) * 2012-10-23 2014-09-09 Airspan Networks Inc. Doherty power amplifier
US8981852B2 (en) * 2012-11-12 2015-03-17 Avago Technologies General Ip (Singapore) Pte. Ltd. Providing an integrated directional coupler in a power amplifier
CN102983824A (en) * 2012-12-25 2013-03-20 福建邮科通信技术有限公司 Self-adaptive predistortion power amplifier
US9030260B2 (en) * 2013-07-19 2015-05-12 Alcatel Lucent Dual-band high efficiency Doherty amplifiers with hybrid packaged power devices
DE102013220160A1 (en) * 2013-10-05 2015-04-09 Rwth Aachen Sequential broadband Doherty power amplifier with adjustable output line back-off
EP2933918B1 (en) 2014-04-15 2017-11-22 Ampleon Netherlands B.V. Ultra wideband doherty amplifier
CN103945149A (en) * 2014-04-28 2014-07-23 上海东洲罗顿通信股份有限公司 Multiple-complex system of high efficiency digital television transmitter and implementing method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5420541A (en) * 1993-06-04 1995-05-30 Raytheon Company Microwave doherty amplifier
US5757229A (en) * 1996-06-28 1998-05-26 Motorola, Inc. Bias circuit for a power amplifier
US5880633A (en) * 1997-05-08 1999-03-09 Motorola, Inc. High efficiency power amplifier

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4225827A (en) * 1979-02-21 1980-09-30 Harris Corporation Stabilization circuit for transistor RF power amplifiers
US5739723A (en) * 1995-12-04 1998-04-14 Motorola, Inc. Linear power amplifier using active bias for high efficiency and method thereof
JPH118560A (en) * 1997-04-25 1999-01-12 Matsushita Electric Ind Co Ltd Circuit and method for transmission output control
US6130579A (en) * 1999-03-29 2000-10-10 Rf Micro Devices, Inc. Feed-forward biasing for RF amplifiers
US6262629B1 (en) * 1999-07-06 2001-07-17 Motorola, Inc. High efficiency power amplifier having reduced output matching networks for use in portable devices
JP4467756B2 (en) * 2000-10-13 2010-05-26 三菱電機株式会社 Doherty amplifier
US6864742B2 (en) * 2001-06-08 2005-03-08 Northrop Grumman Corporation Application of the doherty amplifier as a predistortion circuit for linearizing microwave amplifiers
US20020186079A1 (en) * 2001-06-08 2002-12-12 Kobayashi Kevin W. Asymmetrically biased high linearity balanced amplifier
US6469581B1 (en) * 2001-06-08 2002-10-22 Trw Inc. HEMT-HBT doherty microwave amplifier
KR100553252B1 (en) * 2002-02-01 2006-02-20 아바고테크놀로지스코리아 주식회사 Power Amplification Apparatus of Portable Terminal

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5420541A (en) * 1993-06-04 1995-05-30 Raytheon Company Microwave doherty amplifier
US5757229A (en) * 1996-06-28 1998-05-26 Motorola, Inc. Bias circuit for a power amplifier
US5880633A (en) * 1997-05-08 1999-03-09 Motorola, Inc. High efficiency power amplifier

Also Published As

Publication number Publication date
JP2007509584A (en) 2007-04-12
DE112004001976T5 (en) 2006-10-19
GB2421862A (en) 2006-07-05
GB0605973D0 (en) 2006-05-03
GB2421862B (en) 2007-11-07
CN101164229A (en) 2008-04-16
WO2005043747A2 (en) 2005-05-12
JP4860476B2 (en) 2012-01-25
CN101164229B (en) 2010-12-08

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