FI990600A0 - Vääristymältään vähäinen tehovahvistin - Google Patents

Vääristymältään vähäinen tehovahvistin

Info

Publication number
FI990600A0
FI990600A0 FI990600A FI990600A FI990600A0 FI 990600 A0 FI990600 A0 FI 990600A0 FI 990600 A FI990600 A FI 990600A FI 990600 A FI990600 A FI 990600A FI 990600 A0 FI990600 A0 FI 990600A0
Authority
FI
Finland
Prior art keywords
power amplifier
low distortion
distortion power
low
amplifier
Prior art date
Application number
FI990600A
Other languages
English (en)
Swedish (sv)
Other versions
FI990600A (fi
Inventor
Ronald Gene Myers
Bernard Eugene Sigmon
Robert Michael Jackson
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 FI990600A publication Critical patent/FI990600A/fi
Publication of FI990600A0 publication Critical patent/FI990600A0/fi

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
    • H03F1/0211—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
    • H03F1/0222—Continuous control by using a signal derived from the input signal
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C5/00—Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
FI990600A 1997-07-25 1999-03-17 Vääristymältään vähäinen tehovahvistin FI990600A0 (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/900,584 US5886572A (en) 1997-07-25 1997-07-25 Method and apparatus for reducing distortion in a power amplifier
PCT/US1998/008556 WO1999005783A1 (en) 1997-07-25 1998-04-28 Low distortion power amplifier

Publications (2)

Publication Number Publication Date
FI990600A FI990600A (fi) 1999-03-17
FI990600A0 true FI990600A0 (fi) 1999-03-17

Family

ID=25412754

Family Applications (1)

Application Number Title Priority Date Filing Date
FI990600A FI990600A0 (fi) 1997-07-25 1999-03-17 Vääristymältään vähäinen tehovahvistin

Country Status (11)

Country Link
US (1) US5886572A (fi)
JP (1) JP2002500846A (fi)
CN (1) CN1234922A (fi)
CA (1) CA2266739A1 (fi)
DE (1) DE19881110T1 (fi)
FI (1) FI990600A0 (fi)
FR (1) FR2766637B1 (fi)
GB (1) GB2331881B (fi)
SE (1) SE523585C2 (fi)
TW (1) TW432781B (fi)
WO (1) WO1999005783A1 (fi)

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US6377784B2 (en) 1999-02-09 2002-04-23 Tropian, Inc. High-efficiency modulation RF amplifier
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US6975686B1 (en) 2000-10-31 2005-12-13 Telefonaktiebolaget L.M. Ericsson IQ modulation systems and methods that use separate phase and amplitude signal paths
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US6738432B2 (en) 2001-03-21 2004-05-18 Ericsson Inc. System and method for RF signal amplification
US6785521B2 (en) 2001-03-21 2004-08-31 Ericsson Inc. System and method for current-mode amplitude modulation
US6593812B2 (en) 2001-04-23 2003-07-15 Telefonaktiebolaget Lm Ericsson Automatic optimization of linearity for envelope feedback RF amplifier linearization
US7386287B2 (en) * 2001-07-03 2008-06-10 Siemens Aktiengesellschaft Method for controlling the gain of radio-frequency signal
US6445249B1 (en) * 2001-08-08 2002-09-03 Motorola, Inc. Modification of phase component of error signal to reduce variation of phase component of output signal of power amplifier
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US6600369B2 (en) * 2001-12-07 2003-07-29 Motorola, Inc. Wideband linear amplifier with predistortion error correction
GB2386012A (en) * 2002-03-02 2003-09-03 Motorola Inc A linearized class C RF amplifier
FR2837647B1 (fr) * 2002-03-25 2006-11-24 Canon Kk Emetteur sans fil a consommation de puissance reduite
FR2837639A1 (fr) * 2002-03-25 2003-09-26 Canon Kk Emetteur sans fil a consommation de puissance reduite
DE10230919B4 (de) 2002-07-09 2018-08-02 Rohde & Schwarz Gmbh & Co. Kg Hochfrequenzsender und Verfahren zum wirkungsgradoptimierten Betreiben des Hochfrequenzsenders
US6696866B2 (en) * 2002-07-24 2004-02-24 Motorola, Inc. Method and apparatus for providing a supply voltage based on an envelope of a radio frequency signal
GB0221593D0 (en) * 2002-09-17 2002-10-23 Nokia Corp Envelope elimination and restoration linear amplifier
DE10250613B4 (de) * 2002-10-30 2007-02-08 Advanced Micro Devices, Inc., Sunnyvale Integrierter RF-Signalpegeldetektor, der für die automatische Leistungspegelsteuerung verwendbar ist
GB2398648B (en) 2003-02-19 2005-11-09 Nujira Ltd Power supply stage for an amplifier
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US7002322B1 (en) * 2003-12-23 2006-02-21 Nortel Networks Limited Modulated power supply
JP4199185B2 (ja) * 2004-03-01 2008-12-17 パナソニック株式会社 送信装置及び無線通信装置
JP4536468B2 (ja) * 2004-09-21 2010-09-01 パナソニック株式会社 Ｅ級増幅器、及びｅｅｒ変調増幅装置
US7474149B2 (en) * 2005-03-25 2009-01-06 Pulsewave Rf, Inc. Radio frequency power amplifier and method using a controlled supply
US20070018718A1 (en) * 2005-06-20 2007-01-25 National Sun Yat-Sen University Microwave transmitter and the method for increasing envelope bandwidth
JP4652974B2 (ja) 2005-12-27 2011-03-16 富士通株式会社 タイミング調整装置及びタイミング調整方法
US7869542B2 (en) * 2006-02-03 2011-01-11 Quantance, Inc. Phase error de-glitching circuit and method of operating
CN101401261B (zh) 2006-02-03 2012-11-21 匡坦斯公司 功率放大器控制器电路
US7933570B2 (en) * 2006-02-03 2011-04-26 Quantance, Inc. Power amplifier controller circuit
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US7917106B2 (en) * 2006-02-03 2011-03-29 Quantance, Inc. RF power amplifier controller circuit including calibrated phase control loop
US8093946B2 (en) 2006-03-17 2012-01-10 Nujira Limited Joint optimisation of supply and bias modulation
CN101442294B (zh) * 2007-11-23 2011-11-09 瑞昱半导体股份有限公司 放大电路及其改良线性度的方法
CA2668264A1 (en) 2008-06-05 2009-12-05 Raytheon Canada Limited Linearizing technique for power amplifiers
GB2495306B (en) 2011-10-05 2015-06-24 Nujira Ltd Envelope tracking push-pull or differential power amplifier
JP5624569B2 (ja) 2012-02-17 2014-11-12 株式会社東芝 電力増幅装置
WO2013136860A1 (ja) * 2012-03-12 2013-09-19 日本電気株式会社 送信装置および送信方法
GB2519361B (en) * 2013-10-21 2015-09-16 Nujira Ltd Reduced bandwidth of signal in an envelope path for envelope tracking system
US9385666B2 (en) * 2013-12-09 2016-07-05 Marvell World Trade Ltd. Power amplifier with wide band AM-AM feedback and digital pre-distortion
CN104836574B (zh) * 2015-04-30 2018-03-30 中国科学院微电子研究所 一种自动对齐的包络跟踪功率放大器结构
CN104836536B (zh) * 2015-04-30 2018-09-04 中国科学院微电子研究所 一种基于负反馈的功率放大器结构
US20180054172A1 (en) * 2015-07-27 2018-02-22 Skyworks Solutions, Inc. Devices and methods related to adjusting power provided to power amplifiers
KR102454810B1 (ko) * 2017-05-26 2022-10-13 삼성전기주식회사 옵셋 제거 기능을 갖는 엔벨로프-추적 전류 바이어스 회로
KR102029554B1 (ko) * 2017-10-24 2019-10-07 삼성전기주식회사 엔벨로프 바이어스 회로 및 파워 증폭 장치
US10505498B2 (en) * 2017-10-24 2019-12-10 Samsung Electro-Mechanics Co., Ltd. Envelope tracking bias circuit and power amplifying device
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Also Published As

Publication number Publication date
FR2766637A1 (fr) 1999-01-29
CA2266739A1 (en) 1999-02-04
SE523585C2 (sv) 2004-05-04
GB9905805D0 (en) 1999-05-05
SE9901094L (sv) 1999-03-25
GB2331881B (en) 2002-03-20
FR2766637B1 (fr) 2002-10-25
JP2002500846A (ja) 2002-01-08
US5886572A (en) 1999-03-23
FI990600A (fi) 1999-03-17
TW432781B (en) 2001-05-01
WO1999005783A1 (en) 1999-02-04
GB2331881A (en) 1999-06-02
CN1234922A (zh) 1999-11-10
SE9901094D0 (sv) 1999-03-25
DE19881110T1 (de) 1999-08-05

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