FI19992243A - Multi-Channel Amplifier System - Google Patents

Multi-Channel Amplifier System

Info

Publication number
FI19992243A
FI19992243A FI992243A FI19992243A FI19992243A FI 19992243 A FI19992243 A FI 19992243A FI 992243 A FI992243 A FI 992243A FI 19992243 A FI19992243 A FI 19992243A FI 19992243 A FI19992243 A FI 19992243A
Authority
FI
Finland
Prior art keywords
amplifier system
channel amplifier
channel
amplifier
Prior art date
Application number
FI992243A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI116923B (en
Inventor
Do B Shin
Thomas Ha
Original Assignee
Powerwave Technologies 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 Powerwave Technologies Inc filed Critical Powerwave Technologies Inc
Publication of FI19992243A publication Critical patent/FI19992243A/en
Application granted granted Critical
Publication of FI116923B publication Critical patent/FI116923B/en

Links

Classifications

    • 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
    • H04B1/66—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 for reducing bandwidth of signals; for improving efficiency of transmission
    • 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
    • H03F1/3229—Modifications of amplifiers to reduce non-linear distortion using feed-forward using a loop for error extraction and another loop for error subtraction
    • 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
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
FI992243A 1998-10-19 1999-10-18 Multi-Channel Amplifier System FI116923B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/174,705 US6493543B1 (en) 1998-10-19 1998-10-19 Multichannel amplification system using mask detection
US17470598 1998-10-19

Publications (2)

Publication Number Publication Date
FI19992243A true FI19992243A (en) 2000-04-19
FI116923B FI116923B (en) 2006-03-31

Family

ID=22637177

Family Applications (1)

Application Number Title Priority Date Filing Date
FI992243A FI116923B (en) 1998-10-19 1999-10-18 Multi-Channel Amplifier System

Country Status (5)

Country Link
US (1) US6493543B1 (en)
EP (1) EP0998026B1 (en)
KR (1) KR20000035042A (en)
CA (1) CA2286536C (en)
FI (1) FI116923B (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69940998D1 (en) * 1999-06-30 2009-07-30 Alcatel Lucent Method for the broadband linearization of power amplifiers
US7409007B1 (en) * 1999-09-14 2008-08-05 Lucent Technologies Inc. Method and apparatus for reducing adjacent channel power in wireless communication systems
US6567762B2 (en) * 2000-12-22 2003-05-20 Agilent Technologies, Inc. Dynamic range extension apparatus and method
US20020146996A1 (en) 2001-03-06 2002-10-10 Bachman Thomas A. Scanning receiver for use in power amplifier linearization
US6829471B2 (en) 2001-03-07 2004-12-07 Andrew Corporation Digital baseband receiver in a multi-carrier power amplifier
US20030069022A1 (en) * 2001-10-04 2003-04-10 Mark Kintis Amplitude cancellation topology for multichannel applications
JP3876408B2 (en) * 2001-10-31 2007-01-31 富士通株式会社 Distortion compensation apparatus and distortion compensation method
EP1317064A1 (en) * 2001-11-28 2003-06-04 TTPCOM Limited Transmitter RF power control
US7403573B2 (en) 2003-01-15 2008-07-22 Andrew Corporation Uncorrelated adaptive predistorter
US8302147B2 (en) 2003-02-24 2012-10-30 Csr Technology Inc. System and method for processing a common cable signal using a low-pass filter tap
US7729668B2 (en) 2003-04-03 2010-06-01 Andrew Llc Independence between paths that predistort for memory and memory-less distortion in power amplifiers
US7259630B2 (en) 2003-07-23 2007-08-21 Andrew Corporation Elimination of peak clipping and improved efficiency for RF power amplifiers with a predistorter
US6963242B2 (en) 2003-07-31 2005-11-08 Andrew Corporation Predistorter for phase modulated signals with low peak to average ratios
US7023273B2 (en) 2003-10-06 2006-04-04 Andrew Corporation Architecture and implementation methods of digital predistortion circuitry
KR101229353B1 (en) * 2005-11-03 2013-02-05 엘지전자 주식회사 Mobile terminal and method for matching power amp thereof
US7889810B2 (en) * 2006-12-15 2011-02-15 Pine Valley Investments, Inc. Method and apparatus for a nonlinear feedback control system
US8755756B1 (en) 2009-04-29 2014-06-17 Qualcomm Incorporated Active cancellation of interference in a wireless communication system
US8331485B2 (en) 2009-07-08 2012-12-11 Qualcomm Incorporated Spur cancellation in a digital baseband transmit signal using cancelling tones
CN102647378B (en) * 2011-02-18 2014-11-05 富士通株式会社 Pre-distortion device, pre-distortion method and transmitter/ receiver system
US8615204B2 (en) 2011-08-26 2013-12-24 Qualcomm Incorporated Adaptive interference cancellation for transmitter distortion calibration in multi-antenna transmitters
WO2018182508A1 (en) * 2017-03-31 2018-10-04 Agency For Science, Technology And Research Method and apparatus for tuning a radio frequency predistorter
WO2019111296A1 (en) * 2017-12-04 2019-06-13 Nec Corporation Amplifier, configuration method of amplifier, and communication apparatus
US10826440B2 (en) * 2018-12-28 2020-11-03 Motorola Solutions, Inc. Extended operational bandwidth amplifiers with fractional instantaneous bandwidth feed forward correction

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4943783A (en) * 1989-07-31 1990-07-24 Nippon Telegraph And Telephone Corporation Feed forward distortion correction circuit
GB9009295D0 (en) * 1990-04-25 1990-06-20 Kenington Peter B Apparatus and method for reducing distortion in amplification
US5130663A (en) * 1991-04-15 1992-07-14 Motorola, Inc. Feed forward amplifier network with frequency swept pilot tone
JP3342746B2 (en) 1993-06-30 2002-11-11 富士通株式会社 Linear amplifier
US5485120A (en) * 1994-07-28 1996-01-16 Aval Communications Inc. Feed-forward power amplifier system with adaptive control and control method
US5489875A (en) * 1994-09-21 1996-02-06 Simon Fraser University Adaptive feedforward linearizer for RF power amplifiers
US5570063A (en) * 1995-05-18 1996-10-29 Spectrian, Inc. RF power amplifier with signal predistortion for improved linearity
WO1997008822A1 (en) 1995-08-23 1997-03-06 Motorola Inc. Wideband power amplifier control systems
US5712593A (en) * 1996-02-05 1998-01-27 Motorola, Inc. Linear power amplifier with distortion detection
US5760646A (en) 1996-03-29 1998-06-02 Spectrian Feed-forward correction loop with adaptive predistortion injection for linearization of RF power amplifier
US5808512A (en) * 1997-01-31 1998-09-15 Ophir Rf, Inc. Feed forward amplifiers and methods
US5923214A (en) * 1997-12-17 1999-07-13 Motorola, Inc. Feedforward amplifier network with swept pilot tone for reducing distortion generated by a power amplifier
US5912586A (en) * 1997-12-23 1999-06-15 Motorola, Inc. Feed forward amplifier with digital intermodulation control
US6140874A (en) * 1998-10-19 2000-10-31 Powerwave Technologies, Inc. Amplification system having mask detection and bias compensation
US6144255A (en) * 1998-10-19 2000-11-07 Powerwave Technologies, Inc. Feedforward amplification system having mask detection compensation
US6147555A (en) * 1998-10-19 2000-11-14 Powerwave Technologies, Inc. Amplification system having mask detection

Also Published As

Publication number Publication date
KR20000035042A (en) 2000-06-26
CA2286536A1 (en) 2000-04-19
EP0998026B1 (en) 2006-04-05
CA2286536C (en) 2004-09-28
FI116923B (en) 2006-03-31
US6493543B1 (en) 2002-12-10
EP0998026A1 (en) 2000-05-03

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