SE0101774D0 - Amplifier - Google Patents

Amplifier

Info

Publication number
SE0101774D0
SE0101774D0 SE0101774A SE0101774A SE0101774D0 SE 0101774 D0 SE0101774 D0 SE 0101774D0 SE 0101774 A SE0101774 A SE 0101774A SE 0101774 A SE0101774 A SE 0101774A SE 0101774 D0 SE0101774 D0 SE 0101774D0
Authority
SE
Sweden
Prior art keywords
linear
amplifier
compensation
models
signals
Prior art date
Application number
SE0101774A
Other languages
English (en)
Other versions
SE521268C2 (sv
SE0101774L (sv
Inventor
Richard Hellberg
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
Priority to SE0101774A priority Critical patent/SE521268C2/sv
Publication of SE0101774D0 publication Critical patent/SE0101774D0/sv
Priority to US10/476,002 priority patent/US6897721B2/en
Priority to DE60218465T priority patent/DE60218465T2/de
Priority to AT02714658T priority patent/ATE355651T1/de
Priority to PCT/SE2002/000606 priority patent/WO2002095933A1/en
Priority to EP02714658A priority patent/EP1402625B1/en
Publication of SE0101774L publication Critical patent/SE0101774L/sv
Publication of SE521268C2 publication Critical patent/SE521268C2/sv

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B1/0483—Transmitters with multiple parallel paths
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Amplifiers (AREA)
SE0101774A 2001-05-18 2001-05-18 Sammansatt förstärkare med optimerad linjäritet och effektivitet SE521268C2 (sv)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE0101774A SE521268C2 (sv) 2001-05-18 2001-05-18 Sammansatt förstärkare med optimerad linjäritet och effektivitet
US10/476,002 US6897721B2 (en) 2001-05-18 2002-03-27 Composite amplifier with optimized linearity and efficiency
DE60218465T DE60218465T2 (de) 2001-05-18 2002-03-27 Zusammengesetzter verstärker mit optimierter linearität und effizienz
AT02714658T ATE355651T1 (de) 2001-05-18 2002-03-27 Zusammengesetzter verstärker mit optimierter linearität und effizienz
PCT/SE2002/000606 WO2002095933A1 (en) 2001-05-18 2002-03-27 Composite amplifier with optimized linearity and efficiency
EP02714658A EP1402625B1 (en) 2001-05-18 2002-03-27 Composite amplifier with optimized linearity and efficiency

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0101774A SE521268C2 (sv) 2001-05-18 2001-05-18 Sammansatt förstärkare med optimerad linjäritet och effektivitet

Publications (3)

Publication Number Publication Date
SE0101774D0 true SE0101774D0 (sv) 2001-05-18
SE0101774L SE0101774L (sv) 2002-11-19
SE521268C2 SE521268C2 (sv) 2003-10-14

Family

ID=20284177

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0101774A SE521268C2 (sv) 2001-05-18 2001-05-18 Sammansatt förstärkare med optimerad linjäritet och effektivitet

Country Status (6)

Country Link
US (1) US6897721B2 (sv)
EP (1) EP1402625B1 (sv)
AT (1) ATE355651T1 (sv)
DE (1) DE60218465T2 (sv)
SE (1) SE521268C2 (sv)
WO (1) WO2002095933A1 (sv)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE522479C2 (sv) * 2002-01-16 2004-02-10 Ericsson Telefon Ab L M Sammansatt effektförstärkare
AU2002359211A1 (en) * 2002-12-19 2004-07-14 Telefonaktiebolaget Lm Ericsson Composite amplifier structure
JP2004222151A (ja) 2003-01-17 2004-08-05 Nec Corp ドハーティ増幅器
GB2412515B (en) * 2004-03-13 2007-08-08 Filtronic Plc A doherty amplifier
EP1959565A1 (en) * 2004-06-18 2008-08-20 Mitsubishi Electric Corporation High efficiency amplifier
US7327803B2 (en) 2004-10-22 2008-02-05 Parkervision, Inc. Systems and methods for vector power amplification
US7355470B2 (en) 2006-04-24 2008-04-08 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including embodiments for amplifier class transitioning
US8334722B2 (en) 2007-06-28 2012-12-18 Parkervision, Inc. Systems and methods of RF power transmission, modulation and amplification
US7911272B2 (en) 2007-06-19 2011-03-22 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including blended control embodiments
US7248110B2 (en) 2005-12-06 2007-07-24 Harris Corporation Modified doherty amplifier
US7831221B2 (en) * 2005-12-13 2010-11-09 Andrew Llc Predistortion system and amplifier for addressing group delay modulation
DE602006015363D1 (de) 2006-04-10 2010-08-19 Ericsson Telefon Ab L M Verfahren zum kompensieren von signalverzerrungen in zusammengesetzten verstärkern
US8031804B2 (en) 2006-04-24 2011-10-04 Parkervision, Inc. Systems and methods of RF tower transmission, modulation, and amplification, including embodiments for compensating for waveform distortion
US7937106B2 (en) 2006-04-24 2011-05-03 ParkerVision, Inc, Systems and methods of RF power transmission, modulation, and amplification, including architectural embodiments of same
US20070286308A1 (en) * 2006-06-12 2007-12-13 Thomas Holtzman Williams System and method for modulated signal generation method using two equal, constant-amplitude, adjustable-phase carrier waves
US8315336B2 (en) 2007-05-18 2012-11-20 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including a switching stage embodiment
US7541866B2 (en) 2006-09-29 2009-06-02 Nortel Networks Limited Enhanced doherty amplifier with asymmetrical semiconductors
US20080122542A1 (en) * 2006-11-27 2008-05-29 Gregory Bowles Enhanced amplifier with auxiliary path bias modulation
US7541868B2 (en) * 2007-05-31 2009-06-02 Andrew, Llc Delay modulator pre-distortion circuit for an amplifier
WO2008156800A1 (en) 2007-06-19 2008-12-24 Parkervision, Inc. Combiner-less multiple input single output (miso) amplification with blended control
JP5180311B2 (ja) * 2007-10-26 2013-04-10 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） 改良増幅装置
WO2009145887A1 (en) 2008-05-27 2009-12-03 Parkervision, Inc. Systems and methods of rf power transmission, modulation, and amplification
US8140030B2 (en) * 2008-09-12 2012-03-20 Panasonic Corporation Adaptive impedance converter adaptively controls load impedance
EP2374210B1 (en) 2008-12-09 2015-03-04 Telefonaktiebolaget L M Ericsson (PUBL) Multi-stage amplifier
KR20140026458A (ko) 2011-04-08 2014-03-05 파커비전, 인크. Ｒｆ 전력 송신, 변조 및 증폭 시스템들 및 방법들
KR20140034895A (ko) 2011-06-02 2014-03-20 파커비전, 인크. 안테나 제어
EP2748924B1 (en) 2011-12-20 2015-09-09 Telefonaktiebolaget LM Ericsson (PUBL) Radio frequency power amplifier circuit and method
US8866541B2 (en) * 2012-04-20 2014-10-21 Analog Devices, Inc. Distortion cancellation in analog circuits
US9124225B2 (en) * 2013-09-04 2015-09-01 Scintera Networks Llc Dual power amplifier linearizer
KR20160058855A (ko) 2013-09-17 2016-05-25 파커비전, 인크. 정보를 포함하는 시간의 함수를 렌더링하기 위한 방법, 장치 및 시스템
US11689166B2 (en) 2021-02-04 2023-06-27 Analog Devices International Unlimited Company Circuitry for reducing distortion over a wide frequency range
CN115481708B (zh) * 2022-10-31 2023-05-16 电子科技大学 一种增强型RFID系统及基于Doherty PA实现的能量自持式中继方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5901346A (en) 1996-12-11 1999-05-04 Motorola, Inc. Method and apparatus utilizing a compensated multiple output signal source
US5880633A (en) 1997-05-08 1999-03-09 Motorola, Inc. High efficiency power amplifier
US6097252A (en) 1997-06-02 2000-08-01 Motorola, Inc. Method and apparatus for high efficiency power amplification
US6262629B1 (en) * 1999-07-06 2001-07-17 Motorola, Inc. High efficiency power amplifier having reduced output matching networks for use in portable devices
US6731173B1 (en) 2000-10-23 2004-05-04 Skyworks Solutions, Inc. Doherty bias circuit to dynamically compensate for process and environmental variations
US6396341B1 (en) 2000-12-29 2002-05-28 Ericsson Inc. Class E Doherty amplifier topology for high efficiency signal transmitters
US6765440B2 (en) 2002-12-18 2004-07-20 Andrew Corporation Model-based feed-forward linearization of amplifiers

Also Published As

Publication number Publication date
EP1402625A1 (en) 2004-03-31
ATE355651T1 (de) 2006-03-15
EP1402625B1 (en) 2007-02-28
SE521268C2 (sv) 2003-10-14
WO2002095933A1 (en) 2002-11-28
SE0101774L (sv) 2002-11-19
DE60218465T2 (de) 2007-11-29
DE60218465D1 (de) 2007-04-12
US6897721B2 (en) 2005-05-24
US20040135630A1 (en) 2004-07-15

Similar Documents

Publication Publication Date Title
SE0101774D0 (sv) Amplifier
SE0100063D0 (sv) Förstärkare
ATE362218T1 (de) Schaltungen und verfahren zum kompensieren von schaltverstärkern
TW200707451A (en) Sense amplifier with input offset compensation
AU2003296449A1 (en) Delta-sigma amplifiers with output stage supply voltage variation compensation and methods and digital amplifier systems using the same
CA2488472A1 (en) Digital memory-based predistortion technique
US9929697B2 (en) Source or emitter follower buffer circuit and method with mirrored current
DE60026364D1 (de) Verbesserte vorverzerrungskompensation für einen leistungsverstärker
ATE336101T1 (de) Zusammengesetzter leistungsverstärker
TW200709559A (en) Circuits for generating reference current and bias voltages, and bias circuit using the same
WO2001035526A3 (en) Improved floating, balanced output circuit
AU6340000A (en) Method and apparatus for linearizing an amplifier
TW200703884A (en) Miller-compensated amplifier
DE60124720D1 (de) Zusammengesetzter verstärker
EP1006648A3 (en) Active compensating capacitive multiplier
ATE503303T1 (de) Differenz-ladungspumpe
EP1345319A3 (en) Method and system for reducing non-linearities
ATE518301T1 (de) Ein leistungsverstärkermodul mit verzerrungskompensation
ATE326077T1 (de) Linearisierung eines verstärkers
DK1406469T3 (da) Tilbagekoblingskompensator til et akustisk forstærkningssystem, høreapparat, fremgangsmåde til tilbagekoblingskompensation og anvendelse af fremgangsmåden i et høreapparat
FI962420A (sv) Foerstaerkare med laogbrus
TW200620816A (en) A low voltage differential signal driver with high power supply rejection ration
ATE406690T1 (de) Schnittstellenschaltung für ein differenzsignal
CA2550502A1 (en) Audio amplifier
IT1256046B (it) Amplificatore ottico compatto