SE9701538L - Amplifier circuit and method for tuning the amplifier circuit - Google Patents

Amplifier circuit and method for tuning the amplifier circuit

Info

Publication number
SE9701538L
SE9701538L SE9701538A SE9701538A SE9701538L SE 9701538 L SE9701538 L SE 9701538L SE 9701538 A SE9701538 A SE 9701538A SE 9701538 A SE9701538 A SE 9701538A SE 9701538 L SE9701538 L SE 9701538L
Authority
SE
Sweden
Prior art keywords
amplifier
amplifier circuit
carrier
output signal
circuit
Prior art date
Application number
SE9701538A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE9701538D0 (en
Inventor
James Frank Long
Original Assignee
Motorola 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
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of SE9701538D0 publication Critical patent/SE9701538D0/en
Publication of SE9701538L publication Critical patent/SE9701538L/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/68—Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/60—Amplifiers in which coupling networks have distributed constants, e.g. with waveguide resonators
    • H03F3/602—Combinations of several amplifiers
    • H03F3/604—Combinations of several amplifiers using FET's
    • 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
    • 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

Abstract

An amplifier circuit comprising a carrier amplifier (24) producing a carrier amplifier output signal, a peaking amplifier (26) coupled to the carrier amplifier (24) in a Doherty configuration, and a combination circuit responsive to the carrier amplifier (24) and the peaking amplifier (26). The peaking amplifier (26) is voltage-biased to produce an adjusted intermodulation product signal. The combination circuit (35) combines the adjusted modulation product signal with the carrier amplifier output signal to produce a substantially linearized amplifier circuit output signal.
SE9701538A 1995-11-30 1997-04-24 Amplifier circuit and method for tuning the amplifier circuit SE9701538L (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US56484595A 1995-11-30 1995-11-30
PCT/US1996/014269 WO1997020385A1 (en) 1995-11-30 1996-09-04 Doherty-type amplifier and tuning method

Publications (2)

Publication Number Publication Date
SE9701538D0 SE9701538D0 (en) 1997-04-24
SE9701538L true SE9701538L (en) 1997-09-30

Family

ID=24256136

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9701538A SE9701538L (en) 1995-11-30 1997-04-24 Amplifier circuit and method for tuning the amplifier circuit

Country Status (10)

Country Link
JP (1) JPH10513631A (en)
KR (1) KR19980701804A (en)
AU (1) AU7154696A (en)
CA (1) CA2204409A1 (en)
DE (1) DE19681072T1 (en)
FI (1) FI972345A0 (en)
GB (1) GB2313009A (en)
SE (1) SE9701538L (en)
TW (1) TW322657B (en)
WO (1) WO1997020385A1 (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5786727A (en) * 1996-10-15 1998-07-28 Motorola, Inc. Multi-stage high efficiency linear power amplifier and method therefor
US6028485A (en) * 1998-08-03 2000-02-22 Motorola, Inc. Power amplification apparatus and method therefor
EP1041712B1 (en) * 1999-03-31 2009-01-28 NTT Mobile Communications Network Inc. Feedforward amplifier
US6320462B1 (en) * 2000-04-12 2001-11-20 Raytheon Company Amplifier circuit
SE516847C2 (en) * 2000-07-07 2002-03-12 Ericsson Telefon Ab L M Composite amplifier and transmitter including such amplifier
SE520760C2 (en) * 2000-06-06 2003-08-19 Ericsson Telefon Ab L M Doherty multistage amplifier
US6760230B2 (en) 2001-02-28 2004-07-06 Andrew Corporation Compact, high efficiency, high isolation power amplifier
US20020186079A1 (en) * 2001-06-08 2002-12-12 Kobayashi Kevin W. Asymmetrically biased high linearity balanced amplifier
US6917246B2 (en) * 2001-09-10 2005-07-12 Skyworks Solutions, Inc. Doherty bias circuit to dynamically compensate for process and environmental variations
JP2004221646A (en) 2003-01-09 2004-08-05 Nec Corp Doherty amplifier
JP2004222151A (en) 2003-01-17 2004-08-05 Nec Corp Doherty amplifier
US7038539B2 (en) * 2003-05-06 2006-05-02 Powerwave Technologies, Inc. RF amplifier employing active load linearization
US7710202B2 (en) 2003-09-17 2010-05-04 Nec Corporation Amplifier
WO2005029695A1 (en) * 2003-09-17 2005-03-31 Nec Corporation Amplifier
JP4520204B2 (en) 2004-04-14 2010-08-04 三菱電機株式会社 High frequency power amplifier
KR100654650B1 (en) * 2004-11-25 2006-12-08 아바고테크놀로지스코리아 주식회사 A series-type Doherty amplifier without hybrid coupler
US7180372B2 (en) * 2004-12-07 2007-02-20 Stmicroelectronics, Inc. High frequency amplifier
JP4700470B2 (en) * 2004-12-15 2011-06-15 株式会社日立国際電気 amplifier
US7193473B2 (en) * 2005-03-24 2007-03-20 Cree, Inc. High power Doherty amplifier using multi-stage modules
US7649412B2 (en) 2005-08-01 2010-01-19 Mitsubishi Electric Corporation High efficiency amplifier
JP4486620B2 (en) 2006-06-23 2010-06-23 株式会社エヌ・ティ・ティ・ドコモ Multiband Doherty amplifier
EP2383883B1 (en) * 2010-04-23 2013-07-17 Nxp B.V. Power amplifier
KR101255821B1 (en) * 2011-06-17 2013-04-24 주식회사 피플웍스 Doherty power amplifier being insert type
EP2698918A1 (en) * 2012-08-14 2014-02-19 Nxp B.V. Amplifier circuit
US9407214B2 (en) * 2013-06-28 2016-08-02 Cree, Inc. MMIC power amplifier
DE102013226635B4 (en) 2013-12-19 2023-07-06 Rohde & Schwarz GmbH & Co. Kommanditgesellschaft Doherty amplifier with additional delay element

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01137710A (en) * 1987-11-24 1989-05-30 Sumitomo Electric Ind Ltd Wide band amplifier
US5420541A (en) * 1993-06-04 1995-05-30 Raytheon Company Microwave doherty amplifier
US5444418A (en) * 1994-07-29 1995-08-22 Motorola, Inc. Method and apparatus for feedforward power amplifying
JP4047406B2 (en) * 1996-11-15 2008-02-13 芝浦メカトロニクス株式会社 Cleaning processing equipment

Also Published As

Publication number Publication date
TW322657B (en) 1997-12-11
FI972345A (en) 1997-06-02
GB9713888D0 (en) 1997-09-03
DE19681072T1 (en) 1998-01-22
FI972345A0 (en) 1997-06-02
CA2204409A1 (en) 1997-05-31
KR19980701804A (en) 1998-06-25
JPH10513631A (en) 1998-12-22
AU7154696A (en) 1997-06-19
GB2313009A (en) 1997-11-12
SE9701538D0 (en) 1997-04-24
WO1997020385A1 (en) 1997-06-05

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