AU2001241485A1 - Spectral distortion monitor for controlling pre-distortion and feed-forward linearization of rf power amplifier - Google Patents

Spectral distortion monitor for controlling pre-distortion and feed-forward linearization of rf power amplifier

Info

Publication number
AU2001241485A1
AU2001241485A1 AU2001241485A AU4148501A AU2001241485A1 AU 2001241485 A1 AU2001241485 A1 AU 2001241485A1 AU 2001241485 A AU2001241485 A AU 2001241485A AU 4148501 A AU4148501 A AU 4148501A AU 2001241485 A1 AU2001241485 A1 AU 2001241485A1
Authority
AU
Australia
Prior art keywords
amplifier
spectral
distortion
signal
test
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
AU2001241485A
Inventor
Jason N. Gomez
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Spectrian Corp
Original Assignee
Spectrian Corp
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 Spectrian Corp filed Critical Spectrian Corp
Publication of AU2001241485A1 publication Critical patent/AU2001241485A1/en
Abandoned legal-status Critical Current

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
    • 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
    • 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
    • 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
    • H03F1/3247—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using feedback acting on predistortion circuits

Abstract

A carrier cancellation combiner, and pre-distortion and feed-forward loops of an RF power amplifier are controlled to minimize IMD components at the output of the RF amplifier, by a spectral distortion measurement scheme that performs Fast Fourier Transform (FFT)-based spectral power measurements at a "reference' signal port (associated with the RF input signal), and a plurality of "test' signal ports (associated with various monitoring locations of the amplifier). Signals extracted from the control and test ports are downconverted to baseband, bandpass filtered, digitized and stored as a spectral "snapshot' of the entire band of the signal infrastructure of the amplifier. A digital signal processor-based controller processes the buffered data to produce averaged FFT's of the data extracted from the reference and test ports and thereby provide spectral information for each sampled signal set. The FFT for the control data is processed to establish a baseline, with which the FFTs for the test data are compared, to generate adjustment signals for control parameters through which IMD components introduced by the amplifier may be minimized.
AU2001241485A 2000-02-25 2001-02-14 Spectral distortion monitor for controlling pre-distortion and feed-forward linearization of rf power amplifier Abandoned AU2001241485A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/511,877 US6275106B1 (en) 2000-02-25 2000-02-25 Spectral distortion monitor for controlling pre-distortion and feed-forward linearization of rf power amplifier
US09511877 2000-02-25
PCT/US2001/004737 WO2001063748A1 (en) 2000-02-25 2001-02-14 Spectral distortion monitor for controlling pre-distortion and feed-forward linearization of rf power amplifier

Publications (1)

Publication Number Publication Date
AU2001241485A1 true AU2001241485A1 (en) 2001-09-03

Family

ID=24036819

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001241485A Abandoned AU2001241485A1 (en) 2000-02-25 2001-02-14 Spectral distortion monitor for controlling pre-distortion and feed-forward linearization of rf power amplifier

Country Status (8)

Country Link
US (1) US6275106B1 (en)
EP (1) EP1262017B1 (en)
JP (1) JP4913304B2 (en)
KR (1) KR20030010583A (en)
AT (1) ATE439700T1 (en)
AU (1) AU2001241485A1 (en)
DE (1) DE60139547D1 (en)
WO (1) WO2001063748A1 (en)

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KR100420394B1 (en) * 2002-01-29 2004-02-26 주식회사 씨원테크놀로지 A linear power amplification method for a pre-distortion type linear rf power amplifier using a characteristics of non-linearity of rf amplifier
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US20030179043A1 (en) * 2002-03-19 2003-09-25 John Matz Method and apparatus for providing carrier cancellation in a feed forward amplifier circuit
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US6919764B2 (en) * 2003-03-11 2005-07-19 Andrew Corporation Amplifier control system with statistical enhancement of resolution of digital control signals
US7123890B2 (en) 2003-03-11 2006-10-17 Andrew Corporation Signal sample acquisition techniques
US7295819B2 (en) 2003-03-11 2007-11-13 Andrew Corporation Signal sample acquisition techniques
US7110739B2 (en) * 2003-04-10 2006-09-19 Powerwave Technologies, Inc. Multi-transmitter communication system employing anti-phase pilot signals
US7123086B2 (en) * 2003-05-07 2006-10-17 Powerwave Technologies, Inc. Feed forward amplifier employing positive feedback pilot generation
US7126421B2 (en) * 2003-09-23 2006-10-24 Powerwave Technologies, Inc. Method for aligning feed forward loops
US20050200408A1 (en) * 2004-03-15 2005-09-15 Benjamin James A. Method and apparatus for feed forward linearization of wideband RF amplifiers
US7193462B2 (en) * 2005-03-22 2007-03-20 Powerwave Technologies, Inc. RF power amplifier system employing an analog predistortion module using zero crossings
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EP2311185B1 (en) * 2008-07-02 2012-01-18 Innovaradio S.A. A pre-distortion method and device to enhance the power utility of power amplifiers in wireless digital communication applications
DE102008052172B4 (en) * 2008-10-17 2014-01-23 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Device for generating a correction signal
US20100130145A1 (en) * 2008-11-24 2010-05-27 Sei-Joo Jang Amplification system for interference suppression in wireless communications
US8706062B1 (en) * 2008-12-19 2014-04-22 Scintera Networks, Inc. Self-adaptive power amplification
US8542062B2 (en) 2009-11-16 2013-09-24 Innovaradio Sa Adaptive digital pre-distortion method and device to enhance the power utility of power amplifiers in wireless digital communication applications
CN101807886B (en) * 2010-03-26 2012-08-08 深圳市云海通讯股份有限公司 Radio frequency power amplifying device and analog predistortion correction method thereof
US8703868B2 (en) 2011-11-28 2014-04-22 Celanese International Corporation Integrated process for producing polyvinyl alcohol or a copolymer thereof and ethanol
US9584085B2 (en) * 2013-11-26 2017-02-28 Qorvo Us, Inc. Amplifying system
US10826440B2 (en) * 2018-12-28 2020-11-03 Motorola Solutions, Inc. Extended operational bandwidth amplifiers with fractional instantaneous bandwidth feed forward correction

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Also Published As

Publication number Publication date
JP2003524978A (en) 2003-08-19
DE60139547D1 (en) 2009-09-24
EP1262017A4 (en) 2005-12-28
KR20030010583A (en) 2003-02-05
EP1262017A1 (en) 2002-12-04
US6275106B1 (en) 2001-08-14
WO2001063748A1 (en) 2001-08-30
JP4913304B2 (en) 2012-04-11
ATE439700T1 (en) 2009-08-15
EP1262017B1 (en) 2009-08-12

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