GB2421862A - 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
GB2421862A
GB2421862A GB0605973A GB0605973A GB2421862A GB 2421862 A GB2421862 A GB 2421862A GB 0605973 A GB0605973 A GB 0605973A GB 0605973 A GB0605973 A GB 0605973A GB 2421862 A GB2421862 A GB 2421862A
Authority
GB
United Kingdom
Prior art keywords
amplifier
power
power amplifier
control signal
voltage control
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.)
Granted
Application number
GB0605973A
Other versions
GB2421862B (en
GB0605973D0 (en
Inventor
Youngwoo Kwon
Junghyun Kim
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.)
Wavics Inc
Original Assignee
Wavics Inc
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 claimed from US10/690,923 external-priority patent/US7053706B2/en
Application filed by Wavics Inc filed Critical Wavics Inc
Publication of GB0605973D0 publication Critical patent/GB0605973D0/en
Publication of GB2421862A publication Critical patent/GB2421862A/en
Application granted granted Critical
Publication of GB2421862B publication Critical patent/GB2421862B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H03F1/02—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
    • H03F1/0288—Modifications 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
    • 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

Landscapes

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

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.

Description

GB 2421862 A continuation (74) Agent and/or Address for Service: Williams
Powell Morley House, 26- 30 Holborn Viaduct, LONDON, EC1A 2BP, United Kingdom
GB0605973A 2003-10-21 2004-10-19 High linearity doherty communication amplifier with bias control Expired - Fee Related GB2421862B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/690,923 US7053706B2 (en) 2002-02-01 2003-10-21 High linearity doherty communication amplifier with bias control
PCT/US2004/034797 WO2005043747A2 (en) 2003-10-21 2004-10-19 High linearity doherty communication amplifier with bias control

Publications (3)

Publication Number Publication Date
GB0605973D0 GB0605973D0 (en) 2006-05-03
GB2421862A true GB2421862A (en) 2006-07-05
GB2421862B GB2421862B (en) 2007-11-07

Family

ID=34549861

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0605973A Expired - Fee Related GB2421862B (en) 2003-10-21 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 (20)

* 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
CN102577104B (en) * 2009-10-23 2015-01-14 日本碍子株式会社 Combiner for doherty amplifier
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
CN107408923B (en) * 2015-02-15 2021-05-28 天工方案公司 Doherty power amplifier with reduced size
CN106982041B (en) * 2017-02-23 2023-07-25 南京邮电大学 Novel topological structure of 180-degree annular bridge designed by lumped parameters and method for outputting arbitrary power ratio by using novel topological structure
CN116388699B (en) * 2021-12-24 2024-04-30 苏州华太电子技术股份有限公司 Doherty power amplifier device and power amplification system
CN117595810A (en) * 2022-08-18 2024-02-23 恩智浦美国有限公司 Doherty amplifier

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
US20020186079A1 (en) * 2001-06-08 2002-12-12 Kobayashi Kevin W. Asymmetrically biased high linearity balanced 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
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
DE112004001976T5 (en) 2006-10-19
JP2007509584A (en) 2007-04-12
WO2005043747A3 (en) 2005-09-09
CN101164229A (en) 2008-04-16
GB2421862B (en) 2007-11-07
JP4860476B2 (en) 2012-01-25
CN101164229B (en) 2010-12-08
WO2005043747A2 (en) 2005-05-12
GB0605973D0 (en) 2006-05-03

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20121019