EP2022179A4 - High efficiency linearization power amplifier for wireless communication - Google Patents

High efficiency linearization power amplifier for wireless communication

Info

Publication number
EP2022179A4
EP2022179A4 EP07861302A EP07861302A EP2022179A4 EP 2022179 A4 EP2022179 A4 EP 2022179A4 EP 07861302 A EP07861302 A EP 07861302A EP 07861302 A EP07861302 A EP 07861302A EP 2022179 A4 EP2022179 A4 EP 2022179A4
Authority
EP
European Patent Office
Prior art keywords
power amplifier
information
predistortion
wireless communication
high efficiency
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.)
Withdrawn
Application number
EP07861302A
Other languages
German (de)
French (fr)
Other versions
EP2022179A1 (en
Inventor
Dali Yang
Jia Yang
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.)
Dali Systems Co Ltd
Original Assignee
Dali Systems Co Ltd
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 Dali Systems Co Ltd filed Critical Dali Systems Co Ltd
Publication of EP2022179A1 publication Critical patent/EP2022179A1/en
Publication of EP2022179A4 publication Critical patent/EP2022179A4/en
Withdrawn legal-status Critical Current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
    • H03F1/3241—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
    • 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
    • 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
    • H03F1/3294—Acting on the real and imaginary components of the input signal
    • 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
    • H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/57—Separate feedback of real and complex signals being present
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
    • H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
    • H03F2201/3233—Adaptive predistortion using lookup table, e.g. memory, RAM, ROM, LUT, to generate the predistortion

Abstract

An embodiment of the invention uses a predistortion correction signal to combination the modulated RF signal by an analog multiplier for linearization of power amplifiers having nonlinear characteristics such as those used in wireless RF transmitters. A predistortion controller comprises a plurality of down converters for retrieving both the ideal non-distorted information and the feedback distorted information, together with pre-stored digitally-indexed predistortion information stored, for example, in a look-up table. The digitally- indexed information models nonlinear characteristics of the high power amplifier, and is stored prior to processing of pre-compensation in the power amplifier. When the predistortion information is combined with the modulated RF signal in the analog multiplier, the result is a substantially linear information transmission from the power amplifier.
EP07861302A 2006-04-28 2007-04-30 High efficiency linearization power amplifier for wireless communication Withdrawn EP2022179A4 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US79582006P 2006-04-28 2006-04-28
US87664006P 2006-12-22 2006-12-22
US89774607P 2007-01-26 2007-01-26
US89831207P 2007-01-29 2007-01-29
PCT/US2007/010566 WO2008105775A1 (en) 2006-04-28 2007-04-30 High efficiency linearization power amplifier for wireless communication

Publications (2)

Publication Number Publication Date
EP2022179A1 EP2022179A1 (en) 2009-02-11
EP2022179A4 true EP2022179A4 (en) 2009-12-23

Family

ID=39721516

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07861302A Withdrawn EP2022179A4 (en) 2006-04-28 2007-04-30 High efficiency linearization power amplifier for wireless communication

Country Status (2)

Country Link
EP (1) EP2022179A4 (en)
WO (1) WO2008105775A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6985704B2 (en) 2002-05-01 2006-01-10 Dali Yang System and method for digital memorized predistortion for wireless communication
US8064850B2 (en) 2002-05-01 2011-11-22 Dali Systems Co., Ltd. High efficiency linearization power amplifier for wireless communication
US8380143B2 (en) 2002-05-01 2013-02-19 Dali Systems Co. Ltd Power amplifier time-delay invariant predistortion methods and apparatus
US8811917B2 (en) 2002-05-01 2014-08-19 Dali Systems Co. Ltd. Digital hybrid mode power amplifier system
WO2008078195A2 (en) 2006-12-26 2008-07-03 Dali Systems Co., Ltd. Method and system for baseband predistortion linearization in multi-channel wideband communication systems
CN101908861B (en) * 2009-06-08 2012-11-07 瑞昱半导体股份有限公司 Transmitter, method for lowering signal distortion, and method for generating predistortion parameters
KR102136940B1 (en) 2010-09-14 2020-07-23 달리 시스템즈 씨오. 엘티디. Remotely Reconfigurable Distributed Antenna System and Methods

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6314142B1 (en) * 1996-06-19 2001-11-06 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Pre-distortion for a non-linear transmission path in the high frequency range

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6985704B2 (en) * 2002-05-01 2006-01-10 Dali Yang System and method for digital memorized predistortion for wireless communication

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6314142B1 (en) * 1996-06-19 2001-11-06 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Pre-distortion for a non-linear transmission path in the high frequency range

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2008105775A1 *

Also Published As

Publication number Publication date
EP2022179A1 (en) 2009-02-11
WO2008105775A1 (en) 2008-09-04

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