BR9812398A - Aparelho e método para amplificar um sinal - Google Patents

Aparelho e método para amplificar um sinal

Info

Publication number
BR9812398A
BR9812398A BR9812398-0A BR9812398A BR9812398A BR 9812398 A BR9812398 A BR 9812398A BR 9812398 A BR9812398 A BR 9812398A BR 9812398 A BR9812398 A BR 9812398A
Authority
BR
Brazil
Prior art keywords
output
input
coupled
amplifier
control
Prior art date
Application number
BR9812398-0A
Other languages
English (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 BR9812398A publication Critical patent/BR9812398A/pt

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
    • H03G3/3042—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power 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
    • H03F1/0238—Continuous control by using a signal derived from the output signal, e.g. bootstrapping the voltage supply using supply converters
    • 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
    • H03F1/0277—Selecting one or more amplifiers from a plurality of 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
    • H03F1/0288—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
    • H03G—CONTROL OF AMPLIFICATION
    • H03G2201/00—Indexing scheme relating to subclass H03G
    • H03G2201/10—Gain control characterised by the type of controlled element
    • H03G2201/106—Gain control characterised by the type of controlled element being attenuating element

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

<B>APARELHO E MéTODO PARA AMPLIFICAR UM SINAL<D> O aparelho inclui um amplificador (204) que possui uma entrada e uma saída, sendo a saída do amplificador acoplada a uma entrada de um amplificador Doherty (208). Um amplificador Doherty (208) inclui uma entrada de controle e uma saída Doherty. O aparelho inclui, ainda, um detector (224) que possui uma entrada acoplada à saída do amplificador Doherty (208). O detector fornece um sinal detectado em sua saída a um controlador (228), o controlador respondendo ao sinal detectado mediante a produção de uma primeira saída de controle (230) e de uma segunda saída de controle (231). A primeira saída de controle é acoplada à entrada do regulador de comutação (232), tendo o regulador de comutação uma saída acoplada à entrada de controle do amplificador Doherty. A segunda saída de controle é acoplada a uma entrada de controle de um atenuador variável (202), sendo a saída do atenuador variável acoplada à entrada do amplificador (204).
BR9812398-0A 1997-09-30 1998-05-08 Aparelho e método para amplificar um sinal BR9812398A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/940,563 US5886575A (en) 1997-09-30 1997-09-30 Apparatus and method for amplifying a signal
PCT/US1998/009543 WO1999017443A1 (en) 1997-09-30 1998-05-08 Apparatus and method for amplifying a signal

Publications (1)

Publication Number Publication Date
BR9812398A true BR9812398A (pt) 2000-09-12

Family

ID=25475057

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9812398-0A BR9812398A (pt) 1997-09-30 1998-05-08 Aparelho e método para amplificar um sinal

Country Status (7)

Country Link
US (1) US5886575A (pt)
EP (1) EP1020026B1 (pt)
JP (1) JP4088415B2 (pt)
KR (1) KR100329133B1 (pt)
BR (1) BR9812398A (pt)
DE (1) DE69824873T2 (pt)
WO (1) WO1999017443A1 (pt)

Families Citing this family (75)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1724917A1 (en) * 1999-03-31 2006-11-22 NTT Mobile Communications Network Inc. Feedforward amplifier
EP1054507A3 (en) * 1999-05-19 2001-07-04 Nokia Mobile Phones Ltd. Mobile station employing single ended use of a differential power amplifier for reduced output power
US6396350B2 (en) * 2000-02-09 2002-05-28 Paradigm Wireless Systems, Inc. Power booster method and apparatus for improving the performance of radio frequency linear power amplifiers
DE60100753T2 (de) * 2000-03-10 2004-07-01 Paragon Communications Ltd. Verfahren und vorrichtung zur erhöhung des wirkungsgrades von leistungsverstärkern bei signalen mit hohem spitzenwert- zu mittelwertverhältnis
US6437641B1 (en) 2000-03-10 2002-08-20 Paragon Communications Ltd. Method and apparatus for improving the efficiency of power amplifiers, operating under a large peak-to-average ratio
US6492867B2 (en) 2000-03-10 2002-12-10 Paragon Communications Ltd. Method and apparatus for improving the efficiency of power amplifiers, operating under a large peak-to-average ratio
US6825719B1 (en) 2000-05-26 2004-11-30 Intel Corporation RF power amplifier and methods for improving the efficiency thereof
SE516145C2 (sv) * 2000-06-06 2001-11-26 Ericsson Telefon Ab L M Sammansatt förstärkare
SE520760C2 (sv) * 2000-06-06 2003-08-19 Ericsson Telefon Ab L M Doherty-förstärkare av flerstegstyp
US6587511B2 (en) * 2001-01-26 2003-07-01 Intel Corporation Radio frequency transmitter and methods thereof
US6864742B2 (en) * 2001-06-08 2005-03-08 Northrop Grumman Corporation Application of the doherty amplifier as a predistortion circuit for linearizing microwave amplifiers
US6469581B1 (en) 2001-06-08 2002-10-22 Trw Inc. HEMT-HBT doherty microwave amplifier
DE10135993A1 (de) * 2001-07-24 2003-05-08 Siemens Ag Verfahren zur Reduzierung der Verlustleistung bei linearen Verstärkern und zugehörige Vorrichtung
US20030123566A1 (en) * 2001-12-27 2003-07-03 Jaime Hasson Transmitter having a sigma-delta modulator with a non-uniform polar quantizer and methods thereof
US20030125065A1 (en) * 2001-12-27 2003-07-03 Ilan Barak Method and apparatus for generating an output signal
KR100553252B1 (ko) * 2002-02-01 2006-02-20 아바고테크놀로지스코리아 주식회사 휴대용 단말기의 전력 증폭 장치
US6894561B2 (en) * 2002-09-20 2005-05-17 Triquint Semiconductor, Inc. Efficient power control of a power amplifier by periphery switching
AU2003277174A1 (en) * 2002-09-20 2004-04-08 Triquint Semiconductor, Inc. Saturated power amplifier with selectable and variable output power levels
AU2003277173A1 (en) * 2002-09-20 2004-04-08 Triquint Semiconductor, Inc. Linear power amplifier with multiple output power levels
JP4209652B2 (ja) * 2002-09-24 2009-01-14 三菱電機株式会社 高周波電力増幅器
KR100480496B1 (ko) * 2002-11-18 2005-04-07 학교법인 포항공과대학교 도허티 증폭기를 이용한 신호 증폭 장치
AU2002359211A1 (en) * 2002-12-19 2004-07-14 Telefonaktiebolaget Lm Ericsson Composite amplifier structure
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
US7336753B2 (en) * 2003-06-26 2008-02-26 Marvell International Ltd. Transmitter
US7912145B2 (en) * 2003-12-15 2011-03-22 Marvell World Trade Ltd. Filter for a modulator and methods thereof
US7356315B2 (en) * 2003-12-17 2008-04-08 Intel Corporation Outphasing modulators and methods of outphasing modulation
JP4715994B2 (ja) * 2004-08-26 2011-07-06 日本電気株式会社 ドハティ増幅器並列運転回路
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
US7327803B2 (en) 2004-10-22 2008-02-05 Parkervision, Inc. Systems and methods for vector power amplification
US7148746B2 (en) 2004-10-26 2006-12-12 Andrew Corporation High efficiency amplifier
US7142053B2 (en) * 2004-12-06 2006-11-28 Skyworks Solutions, Inc. Voltage clamp for improved transient performance of a collector voltage controlled power amplifier
JP4387936B2 (ja) * 2004-12-13 2009-12-24 株式会社東芝 高周波用のドハティ型の高効率増幅器、およびその信号処理方法
CN101103524B (zh) * 2004-12-21 2010-05-05 艾利森电话股份有限公司 功率放大器***
EP1708358A3 (en) * 2005-03-11 2006-12-06 LG Electronics Inc. Mobile communications terminal having driving voltage control apparatus and method thereof
JP2007053540A (ja) * 2005-08-17 2007-03-01 Nec Corp ドハティ型増幅器
US8334722B2 (en) 2007-06-28 2012-12-18 Parkervision, Inc. Systems and methods of RF power transmission, modulation and amplification
US8013675B2 (en) 2007-06-19 2011-09-06 Parkervision, Inc. Combiner-less multiple input single output (MISO) amplification with blended control
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
US7382194B2 (en) * 2006-01-18 2008-06-03 Triquint Semiconductor, Inc. Switched distributed power amplifier
JP5275973B2 (ja) * 2006-04-10 2013-08-28 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） 複合増幅器の信号歪みを補償するための方法
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
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
JP4831571B2 (ja) * 2006-05-02 2011-12-07 富士通株式会社 増幅器ユニット及びその故障検出方法
JP2008035487A (ja) * 2006-06-19 2008-02-14 Renesas Technology Corp Ｒｆ電力増幅器
WO2008012898A1 (fr) * 2006-07-27 2008-01-31 Panasonic Corporation Appareil d'amplification de puissance
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
JPWO2008053534A1 (ja) * 2006-10-31 2010-02-25 パナソニック株式会社 ドハティ増幅器
CN101563840B (zh) * 2006-12-19 2012-06-06 三菱电机株式会社 电力放大装置
US7620129B2 (en) * 2007-01-16 2009-11-17 Parkervision, Inc. RF power transmission, modulation, and amplification, including embodiments for generating vector modulation control signals
US7541868B2 (en) * 2007-05-31 2009-06-02 Andrew, Llc Delay modulator pre-distortion circuit for an amplifier
JP5169122B2 (ja) * 2007-10-09 2013-03-27 住友電気工業株式会社 ドハティ増幅装置
WO2009145887A1 (en) 2008-05-27 2009-12-03 Parkervision, Inc. Systems and methods of rf power transmission, modulation, and amplification
US7619468B1 (en) * 2008-09-30 2009-11-17 Nortel Networks Limited Doherty amplifier with drain bias supply modulation
US8736364B2 (en) * 2009-10-13 2014-05-27 Nec Corporation Power amplifier and method of operation thereof
JP5705122B2 (ja) * 2009-10-23 2015-04-22 日本碍子株式会社 ドハティ増幅器用合成器
EP2339745A1 (en) 2009-12-15 2011-06-29 Nxp B.V. Doherty amplifier
EP2362541A1 (en) * 2010-02-25 2011-08-31 Alcatel Lucent Parallel amplifier
WO2012139126A1 (en) 2011-04-08 2012-10-11 Parkervision, Inc. Systems and methods of rf power transmission, modulation, and amplification
DE102011075314B4 (de) 2011-05-05 2018-08-30 Rohde & Schwarz Gmbh & Co. Kg Geregelter Hochleistungsverstärker
WO2012167111A2 (en) 2011-06-02 2012-12-06 Parkervision, Inc. Antenna control
WO2014110187A1 (en) 2013-01-08 2014-07-17 Aviat Networks, Inc. Systems and methods for biasing amplifiers with adaptive closed loop control
US9160284B2 (en) 2013-01-08 2015-10-13 Aviat U.S., Inc. Systems and methods for biasing amplifiers using adaptive closed-loop control and adaptive predistortion
US9059666B2 (en) * 2013-01-08 2015-06-16 Aviat U.S., Inc. Systems and methods for biasing amplifiers during high-power operation with adaptive closed-loop control
US9083350B1 (en) * 2013-02-12 2015-07-14 Aethercomm, Inc. Method and apparatus for a digital non-linear loop control circuit
DE102013207898A1 (de) 2013-04-30 2014-10-30 Novero Dabendorf Gmbh Kompensation einer Signal-Dämpfung bei der Übertragung von Sendesignalen eines Mobilfunkgeräts
JP2015046795A (ja) * 2013-08-28 2015-03-12 株式会社東芝 電力増幅装置、及び電力増幅装置の制御方法
WO2015042142A1 (en) 2013-09-17 2015-03-26 Parkervision, Inc. Method, apparatus and system for rendering an information bearing function of time
JP5833094B2 (ja) * 2013-12-26 2015-12-16 株式会社東芝 電力増幅装置、及び電力増幅装置の制御方法
JP2016225777A (ja) * 2015-05-29 2016-12-28 日本電信電話株式会社 振幅検出回路
CN208710425U (zh) 2017-10-06 2019-04-09 原星股份有限公司 助行车的座面结构
JP2019092131A (ja) 2017-11-17 2019-06-13 株式会社村田製作所 電力増幅モジュール
CN110635698B (zh) * 2019-05-28 2021-04-30 电子科技大学 一种具有高回退范围的射频信号整流器

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900823A (en) * 1973-03-28 1975-08-19 Nathan O Sokal Amplifying and processing apparatus for modulated carrier signals
US4378530A (en) * 1979-07-04 1983-03-29 Unisearch Limited High-efficiency low-distortion amplifier
JPH03198407A (ja) * 1989-12-26 1991-08-29 Mitsubishi Electric Corp 線形増幅器
JP2703667B2 (ja) * 1991-01-10 1998-01-26 三菱電機株式会社 電力増幅装置
US5420541A (en) * 1993-06-04 1995-05-30 Raytheon Company Microwave doherty amplifier
US5974041A (en) * 1995-12-27 1999-10-26 Qualcomm Incorporated Efficient parallel-stage power amplifier
US5757229A (en) * 1996-06-28 1998-05-26 Motorola, Inc. Bias circuit for a power amplifier

Also Published As

Publication number Publication date
EP1020026A4 (en) 2001-04-04
KR20010024337A (ko) 2001-03-26
KR100329133B1 (ko) 2002-03-18
JP4088415B2 (ja) 2008-05-21
JP2001518731A (ja) 2001-10-16
DE69824873T2 (de) 2005-06-30
WO1999017443A1 (en) 1999-04-08
US5886575A (en) 1999-03-23
DE69824873D1 (de) 2004-08-05
EP1020026B1 (en) 2004-06-30
EP1020026A1 (en) 2000-07-19

Similar Documents

Publication Publication Date Title
BR9812398A (pt) Aparelho e método para amplificar um sinal
BR9807896A (pt) Sistema para controlar, dinamicamente, um dispositivo de rede.
SE9603336D0 (sv) System med optisk förstärkare
AU629685B2 (en) Amplifying with directly coupled, cascaded amplifiers
BR9813708A (pt) Processo e aparelho para determinar um ponto de operação de um amplicifador não linear de um canal de comunicação.
BR9900530A (pt) Amplificador de faixa duplas.
ATE161667T1 (de) Dynamische bereichskompression
SE9603337D0 (sv) System med återkopplad optisk förstärkare
DK0578021T3 (da) Høreapparat
KR860004320A (ko) CO₂레이저 빔 프로파일(Laser Beam Profile)측정장치
KR860007596A (ko) 정보 처리장치의 성능을 조정하기 위한 시스템
KR940020667A (ko) 오디오 증폭기(Audio amplifier arrangement)
FI933886A (fi) Menetelmä ja järjestely suurtaajuustehovahvistimen toiminnan ohjaamiseen
BR9916386A (pt) Método e aparelho para controlar a razão de um sinal de saìda e um sinal de entrada
NO970630L (no) Ström/trykk-transduser med valgbart, justerbart inngangsfilter
MY115672A (en) Primary color video signal output circuit
BR9705513A (pt) Circuito de geração de frequência e método de operação.
KR960027482A (ko) 송신 출력장치 및 방법
KR970004296A (ko) 오디오 시스템의 볼륨 레벨 조정 방법
ES2097775T3 (es) Procedimiento para la realizacion de operaciones de entrada/salida en sistemas de proceso de datos.
NO914737L (no) Prosess-styring
KR930009437A (ko) 하나의 키(Key)를 이용한 페이드기능 제어방법
KR950022150A (ko) 가변 감쇠기를 이용한 자동 이득 조절장치
ES2135880T3 (es) Procedimiento de emision y circuito de emision correspondiente.
KR920010441A (ko) 비디오 램의 메모리 선택회로

Legal Events

Date Code Title Description
B08F Application fees: application dismissed [chapter 8.6 patent gazette]

Free format text: REFERENTE A 4O, 5O, 6O, 7O, 8O E 9O ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1909 DE 07/08/2007.