FI114667B - Tehokas lineaaritehovahvistin - Google Patents

Tehokas lineaaritehovahvistin Download PDF

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Publication number
FI114667B
FI114667B FI971051A FI971051A FI114667B FI 114667 B FI114667 B FI 114667B FI 971051 A FI971051 A FI 971051A FI 971051 A FI971051 A FI 971051A FI 114667 B FI114667 B FI 114667B
Authority
FI
Finland
Prior art keywords
signals
signal
adjacent channel
modulator
generating
Prior art date
Application number
FI971051A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI971051A0 (fi
FI971051A (fi
Inventor
Paul W Dent
Original Assignee
Ericsson 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 Ericsson Inc filed Critical Ericsson Inc
Publication of FI971051A0 publication Critical patent/FI971051A0/fi
Publication of FI971051A publication Critical patent/FI971051A/fi
Application granted granted Critical
Publication of FI114667B publication Critical patent/FI114667B/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
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3223—Modifications of amplifiers to reduce non-linear distortion using feed-forward

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Insulated Conductors (AREA)
FI971051A 1994-09-14 1997-03-13 Tehokas lineaaritehovahvistin FI114667B (fi)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US30572994 1994-09-14
US08/305,729 US5694433A (en) 1994-09-14 1994-09-14 Efficient linear power amplification
PCT/US1995/011754 WO1996008866A1 (fr) 1994-09-14 1995-09-14 Amplification de puissance lineaire efficace
US9511754 1995-09-14

Publications (3)

Publication Number Publication Date
FI971051A0 FI971051A0 (fi) 1997-03-13
FI971051A FI971051A (fi) 1997-05-14
FI114667B true FI114667B (fi) 2004-11-30

Family

ID=23182083

Family Applications (1)

Application Number Title Priority Date Filing Date
FI971051A FI114667B (fi) 1994-09-14 1997-03-13 Tehokas lineaaritehovahvistin

Country Status (10)

Country Link
US (1) US5694433A (fr)
EP (1) EP0782789B1 (fr)
JP (1) JP3644965B2 (fr)
KR (1) KR100398302B1 (fr)
CN (1) CN1076903C (fr)
AU (1) AU691346B2 (fr)
CA (1) CA2199708C (fr)
DE (1) DE69530778T2 (fr)
FI (1) FI114667B (fr)
WO (1) WO1996008866A1 (fr)

Families Citing this family (37)

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US5920596A (en) * 1995-01-31 1999-07-06 Motorola, Inc. Apparatus for amplifying a signal using a digital processor
US5815531A (en) * 1996-06-12 1998-09-29 Ericsson Inc. Transmitter for encoded data bits
US6185259B1 (en) 1996-06-12 2001-02-06 Ericsson Inc. Transmitter/receiver for GMSK and offset-QAM
US6298221B1 (en) * 1998-04-01 2001-10-02 Denso Corporation Adaptive receiver linearity techniques for a radio transceiver
US6600792B2 (en) 1998-06-26 2003-07-29 Qualcomm Incorporated Predistortion technique for high power amplifiers
US6404823B1 (en) * 1998-07-01 2002-06-11 Conexant Systems, Inc. Envelope feedforward technique with power control for efficient linear RF power amplification
US6349216B1 (en) * 1999-07-22 2002-02-19 Motorola, Inc. Load envelope following amplifier system
JP2001203540A (ja) * 2000-01-19 2001-07-27 Hitachi Ltd 高周波電力増幅器
US7003025B2 (en) * 2000-08-31 2006-02-21 Nokia Mobile Phones Ltd. Envelope stabilization method and apparatus
US6545541B2 (en) 2001-05-29 2003-04-08 Ericsson Inc. Power amplifier embedded cell bias detection, methods of detecting bias in power amplifiers and systems utilizing embedded cell bias detection
US6665525B2 (en) 2001-05-29 2003-12-16 Ericsson Inc. High-level modulation method and apparatus
US7088958B2 (en) * 2001-06-19 2006-08-08 Intersil Americas Inc. Remote power amplifier linearization
WO2003021804A1 (fr) * 2001-09-05 2003-03-13 Envara Ltd. Nouvelle architecture de circuit integre rf emetteur-recepteur et son procede d'utilisation
US20030179830A1 (en) * 2002-03-25 2003-09-25 Eidson Donald B. Efficient, high fidelity transmission of modulation schemes through power-constrained remote relay stations by local transmit predistortion and local receiver feedback
US7869803B2 (en) 2002-10-15 2011-01-11 Qualcomm Incorporated Profile modification for roaming in a communications environment
US7882346B2 (en) * 2002-10-15 2011-02-01 Qualcomm Incorporated Method and apparatus for providing authentication, authorization and accounting to roaming nodes
US7349679B1 (en) 2004-06-30 2008-03-25 Qualcomm Inc. Integrated power amplifier
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
KR100756041B1 (ko) * 2005-06-27 2007-09-07 삼성전자주식회사 믹서를 이용한 도허티 증폭장치 및 송신기
US9066344B2 (en) 2005-09-19 2015-06-23 Qualcomm Incorporated State synchronization of access routers
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
WO2007094241A1 (fr) * 2006-02-15 2007-08-23 Matsushita Electric Industrial Co., Ltd. Circuit de transmission
JP4646845B2 (ja) * 2006-03-30 2011-03-09 富士通株式会社 送信機
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
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
US7719355B2 (en) * 2007-05-31 2010-05-18 Motorola, Inc. Method and apparatus for providing a Cartesian training waveform
WO2009005768A1 (fr) 2007-06-28 2009-01-08 Parkervision, Inc. Systèmes et procédés de transmission, de modulation et d'amplification de puissance hf
WO2009145887A1 (fr) 2008-05-27 2009-12-03 Parkervision, Inc. Systèmes et procédés de transmission, de modulation et d'amplification de puissance radioélectrique (rf)
EP2695294A1 (fr) 2011-04-08 2014-02-12 Parkervision, Inc. Systèmes et procédés de transmission, modulation et amplification de puissance rf
EP2715867A4 (fr) 2011-06-02 2014-12-17 Parkervision Inc Commande d'antenne
KR20160058855A (ko) 2013-09-17 2016-05-25 파커비전, 인크. 정보를 포함하는 시간의 함수를 렌더링하기 위한 방법, 장치 및 시스템
EP3057279A1 (fr) 2015-02-16 2016-08-17 Universität der Bundeswehr München Dispositif et procédé pour la transmission de données
CN105490650A (zh) * 2015-12-31 2016-04-13 智坤（江苏）半导体有限公司 一种功率放大器及其应用
US10128875B1 (en) * 2018-03-30 2018-11-13 Mitsubishi Electric Research Laboratories, Inc. Methods and system of a digital transmitter with reduced quantization noise

Family Cites Families (15)

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Publication number Priority date Publication date Assignee Title
FR2520957A1 (fr) * 1982-01-29 1983-08-05 Thomson Csf Dispositif de correction d'intermodulation produite par un amplificateur de signaux haute frequence regule en niveau crete
US4490684A (en) * 1983-01-03 1984-12-25 Motorola, Inc. Adaptive quadrature combining apparatus
US5187721A (en) * 1987-03-04 1993-02-16 National Semiconductor Corporation Frequency shift keying modulator
US4843615A (en) * 1987-05-08 1989-06-27 Harris Corp. CPFSK communication system employing nyquist-filtered modulator/demodulator
US5121412A (en) * 1989-01-03 1992-06-09 Motorola, Inc. All-digital quadrature modulator
US5132639A (en) * 1989-09-07 1992-07-21 Ortel Corporation Predistorter for linearization of electronic and optical signals
SE465494B (sv) * 1990-01-22 1991-09-16 Ericsson Telefon Ab L M Foerfarande att kompensera foer olineariteter i en slutfoerstaerkare
JP3044057B2 (ja) * 1990-03-27 2000-05-22 日本電信電話株式会社 出力可変送信装置
US5307022A (en) * 1991-04-15 1994-04-26 Motorola, Inc. High dynamic range modulation independent feed forward amplifier network
JPH05129845A (ja) * 1991-11-01 1993-05-25 Oki Electric Ind Co Ltd 線形化電力増幅器
US5436749A (en) * 1991-12-09 1995-07-25 Scientific-Atlanta, Inc. Method and apparatus for predistortion
JPH0637551A (ja) * 1992-07-17 1994-02-10 Fujitsu Ltd 歪み補償回路
US5481389A (en) * 1992-10-09 1996-01-02 Scientific-Atlanta, Inc. Postdistortion circuit for reducing distortion in an optical communications system
JPH0795664B2 (ja) * 1992-11-27 1995-10-11 日本電気株式会社 高周波帯高出力増幅器
JPH06244647A (ja) * 1993-02-19 1994-09-02 Kokusai Electric Co Ltd 増幅器の非線形歪補償制御回路

Also Published As

Publication number Publication date
CN1157676A (zh) 1997-08-20
JPH10511235A (ja) 1998-10-27
CA2199708C (fr) 2005-07-12
FI971051A0 (fi) 1997-03-13
WO1996008866A1 (fr) 1996-03-21
EP0782789A1 (fr) 1997-07-09
FI971051A (fi) 1997-05-14
AU691346B2 (en) 1998-05-14
JP3644965B2 (ja) 2005-05-11
EP0782789B1 (fr) 2003-05-14
KR100398302B1 (ko) 2003-12-31
CA2199708A1 (fr) 1996-03-21
DE69530778D1 (de) 2003-06-18
DE69530778T2 (de) 2004-02-26
US5694433A (en) 1997-12-02
AU3676895A (en) 1996-03-29
CN1076903C (zh) 2001-12-26

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