IN2014CN03801A - - Google Patents

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Publication number
IN2014CN03801A
IN2014CN03801A IN3801CHN2014A IN2014CN03801A IN 2014CN03801 A IN2014CN03801 A IN 2014CN03801A IN 3801CHN2014 A IN3801CHN2014 A IN 3801CHN2014A IN 2014CN03801 A IN2014CN03801 A IN 2014CN03801A
Authority
IN
India
Prior art keywords
signal
output signal
radio frequency
envelope
non linear
Prior art date
Application number
Other languages
English (en)
Inventor
Richard Hellberg
Tony Fondén
Mats Klingberg
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of IN2014CN03801A publication Critical patent/IN2014CN03801A/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/211—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several 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
    • H03F1/02—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
    • H03F1/0233—Continuous control by using a signal derived from the output signal, e.g. bootstrapping the voltage supply
    • 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
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
    • H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
    • H03F3/193—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only with field-effect devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/102—A non-specified detector of a signal envelope being used in an amplifying circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/20—Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F2203/21—Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F2203/211—Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
    • H03F2203/21106—An input signal being distributed in parallel over the inputs of a plurality of power amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
IN3801CHN2014 2011-12-20 2012-04-10 IN2014CN03801A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161577741P 2011-12-20 2011-12-20
PCT/EP2012/056429 WO2013091905A1 (en) 2011-12-20 2012-04-10 Radio frequency power amplifier circuit and method

Publications (1)

Publication Number Publication Date
IN2014CN03801A true IN2014CN03801A (ja) 2015-10-16

Family

ID=45954664

Family Applications (1)

Application Number Title Priority Date Filing Date
IN3801CHN2014 IN2014CN03801A (ja) 2011-12-20 2012-04-10

Country Status (4)

Country Link
US (1) US8917141B2 (ja)
EP (1) EP2748924B1 (ja)
IN (1) IN2014CN03801A (ja)
WO (1) WO2013091905A1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10181867B2 (en) * 2015-10-08 2019-01-15 Telefonaktiebolaget Lm Ericsson (Publ) Crest factor reduction in a radio transmitter

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE516145C2 (sv) 2000-06-06 2001-11-26 Ericsson Telefon Ab L M Sammansatt förstärkare
SE516847C2 (sv) 2000-07-07 2002-03-12 Ericsson Telefon Ab L M Sammansatt förstärkare samt sändare som innefattar en sådan förstärkare
SE516852C2 (sv) 2000-07-07 2002-03-12 Ericsson Telefon Ab L M Sammansatt förstärkare, sändare med sådan förstärkare samt förfarande för att driva en dylik förstärkare resp. sändare
SE521268C2 (sv) 2001-05-18 2003-10-14 Ericsson Telefon Ab L M Sammansatt förstärkare med optimerad linjäritet och effektivitet
SE521673C2 (sv) * 2001-11-29 2003-11-25 Ericsson Telefon Ab L M Sammansatt förstärkare
US7260157B2 (en) * 2002-11-21 2007-08-21 Sotoudeh Hamedi Hagh Phase shifted transmitter architecture for communication systems
US7038539B2 (en) * 2003-05-06 2006-05-02 Powerwave Technologies, Inc. RF amplifier employing active load linearization
EP1758242A4 (en) 2004-06-18 2008-04-09 Mitsubishi Electric Corp HIGH PERFORMANCE AMPLIFIER
GB2418087B (en) 2004-09-08 2008-03-19 Filtronic Plc A method and apparatus for pre-conditoning an electrical signal
WO2006068553A1 (en) 2004-12-21 2006-06-29 Telefonaktiebolaget Lm Ericsson (Publ) Generation of modulated radio frequency signals
ES2302069T3 (es) 2004-12-21 2008-07-01 Telefonaktiebolaget Lm Ericsson (Publ) Condicionamiento de señal con limitacion de ancho de banda.
US7586428B2 (en) 2005-02-25 2009-09-08 Telefonaktiebolaget L M Ericsson (Publ) Non-linear processing of signals
JP2007243491A (ja) * 2006-03-07 2007-09-20 R & K:Kk 増幅回路
JP5016035B2 (ja) 2006-07-03 2012-09-05 テレフオンアクチーボラゲット エル エム エリクソン（パブル） 通信システムにおけるピーク電力を低減する装置および方法
EP2132872B1 (en) * 2007-03-30 2018-11-28 Apple Inc. Amplifier pre-distortion systems and methods
US8848824B2 (en) 2008-03-07 2014-09-30 Andrew M. Teetzel High efficiency RF system linearizer using controlled complex nonlinear distortion generators

Also Published As

Publication number Publication date
WO2013091905A1 (en) 2013-06-27
EP2748924A1 (en) 2014-07-02
US20140320213A1 (en) 2014-10-30
EP2748924B1 (en) 2015-09-09
US8917141B2 (en) 2014-12-23

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