FI972345A - Förstärkarkrets och förfarande för avstämning av förstärkarkretsen - Google Patents

Förstärkarkrets och förfarande för avstämning av förstärkarkretsen Download PDF

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Publication number
FI972345A
FI972345A FI972345A FI972345A FI972345A FI 972345 A FI972345 A FI 972345A FI 972345 A FI972345 A FI 972345A FI 972345 A FI972345 A FI 972345A FI 972345 A FI972345 A FI 972345A
Authority
FI
Finland
Prior art keywords
amplifier circuit
tuning method
circuit tuning
amplifier
tuning
Prior art date
Application number
FI972345A
Other languages
English (en)
Finnish (fi)
Other versions
FI972345A0 (sv
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 FI972345A publication Critical patent/FI972345A/sv
Publication of FI972345A0 publication Critical patent/FI972345A0/sv

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Amplifiers (AREA)
  • Microwave Amplifiers (AREA)
FI972345A 1995-11-30 1997-06-02 Förstärkarkrets och förfarande för avstämning av förstärkarkretsen FI972345A0 (sv)

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
FI972345A true FI972345A (sv) 1997-06-02
FI972345A0 FI972345A0 (sv) 1997-06-02

Family

ID=24256136

Family Applications (1)

Application Number Title Priority Date Filing Date
FI972345A FI972345A0 (sv) 1995-11-30 1997-06-02 Förstärkarkrets och förfarande för avstämning av förstärkarkretsen

Country Status (10)

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

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
EP1724917A1 (en) * 1999-03-31 2006-11-22 NTT Mobile Communications Network Inc. Feedforward amplifier
US6320462B1 (en) * 2000-04-12 2001-11-20 Raytheon Company Amplifier circuit
SE520760C2 (sv) * 2000-06-06 2003-08-19 Ericsson Telefon Ab L M Doherty-förstärkare av flerstegstyp
SE516847C2 (sv) * 2000-07-07 2002-03-12 Ericsson Telefon Ab L M Sammansatt förstärkare samt sändare som innefattar en sådan förstärkare
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 (ja) 2003-01-09 2004-08-05 Nec Corp ドハ−ティ増幅器
JP2004222151A (ja) 2003-01-17 2004-08-05 Nec Corp ドハーティ増幅器
US7038539B2 (en) * 2003-05-06 2006-05-02 Powerwave Technologies, Inc. RF amplifier employing active load linearization
US7453320B2 (en) * 2003-09-17 2008-11-18 Nec Corporation Amplifier
US7710202B2 (en) 2003-09-17 2010-05-04 Nec Corporation Amplifier
JP4520204B2 (ja) 2004-04-14 2010-08-04 三菱電機株式会社 高周波電力増幅器
KR100654650B1 (ko) * 2004-11-25 2006-12-08 아바고테크놀로지스코리아 주식회사 하이브리드 커플러가 없는 직렬구조의 도허티 증폭기
US7180372B2 (en) * 2004-12-07 2007-02-20 Stmicroelectronics, Inc. High frequency amplifier
JP4700470B2 (ja) * 2004-12-15 2011-06-15 株式会社日立国際電気 増幅器
US7193473B2 (en) * 2005-03-24 2007-03-20 Cree, Inc. High power Doherty amplifier using multi-stage modules
EP1912328B1 (en) * 2005-08-01 2011-09-21 Mitsubishi Electric Corporation Highly efficient amplifier
JP4486620B2 (ja) * 2006-06-23 2010-06-23 株式会社エヌ・ティ・ティ・ドコモ マルチバンドドハティ増幅器
EP2383883B1 (en) * 2010-04-23 2013-07-17 Nxp B.V. Power amplifier
KR101255821B1 (ko) * 2011-06-17 2013-04-24 주식회사 피플웍스 삽입형 바이어스 혼합 전력 증폭장치
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 (de) 2013-12-19 2023-07-06 Rohde & Schwarz GmbH & Co. Kommanditgesellschaft Doherty-Verstärker mit zusätzlichem Verzögerungsglied

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01137710A (ja) * 1987-11-24 1989-05-30 Sumitomo Electric Ind Ltd 広帯域増幅器
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 (ja) * 1996-11-15 2008-02-13 芝浦メカトロニクス株式会社 洗浄処理装置

Also Published As

Publication number Publication date
DE19681072T1 (de) 1998-01-22
SE9701538L (sv) 1997-09-30
GB9713888D0 (en) 1997-09-03
KR19980701804A (ko) 1998-06-25
AU7154696A (en) 1997-06-19
SE9701538D0 (sv) 1997-04-24
GB2313009A (en) 1997-11-12
CA2204409A1 (en) 1997-05-31
WO1997020385A1 (en) 1997-06-05
JPH10513631A (ja) 1998-12-22
TW322657B (sv) 1997-12-11
FI972345A0 (sv) 1997-06-02

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