WO2004112235A3 - Method and system for transmitting signals with reduced spurious emissions - Google Patents

Method and system for transmitting signals with reduced spurious emissions Download PDF

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Publication number
WO2004112235A3
WO2004112235A3 PCT/US2004/017883 US2004017883W WO2004112235A3 WO 2004112235 A3 WO2004112235 A3 WO 2004112235A3 US 2004017883 W US2004017883 W US 2004017883W WO 2004112235 A3 WO2004112235 A3 WO 2004112235A3
Authority
WO
WIPO (PCT)
Prior art keywords
spurious emissions
transmitting signals
reduced spurious
reduced
signals
Prior art date
Application number
PCT/US2004/017883
Other languages
French (fr)
Other versions
WO2004112235A2 (en
Inventor
Mark Allen Mchenry
Original Assignee
Shared Spectrum Co
Mark Allen Mchenry
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 Shared Spectrum Co, Mark Allen Mchenry filed Critical Shared Spectrum Co
Publication of WO2004112235A2 publication Critical patent/WO2004112235A2/en
Publication of WO2004112235A3 publication Critical patent/WO2004112235A3/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
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B1/0475—Circuits with means for limiting noise, interference or distortion
    • 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
    • H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • 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
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B1/0483—Transmitters with multiple parallel paths
    • 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/7163—Spread spectrum techniques using impulse radio
    • H04B1/71635—Transmitter aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/26265—Arrangements for sidelobes suppression specially adapted to multicarrier systems, e.g. spectral precoding
    • 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
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B2001/0408—Circuits with power amplifiers

Abstract

An RF power amplifier architecture minimizes spurious emissions by breaking the transmitted signal into narrow spectrum sub-bands, amplifying each separately, and then combining the signals for transmission purposes.
PCT/US2004/017883 2003-06-10 2004-06-09 Method and system for transmitting signals with reduced spurious emissions WO2004112235A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US47715503P 2003-06-10 2003-06-10
US60/477,155 2003-06-10
US10/861,476 2004-06-07
US10/861,476 US7409010B2 (en) 2003-06-10 2004-06-07 Method and system for transmitting signals with reduced spurious emissions

Publications (2)

Publication Number Publication Date
WO2004112235A2 WO2004112235A2 (en) 2004-12-23
WO2004112235A3 true WO2004112235A3 (en) 2005-05-06

Family

ID=33514103

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/017883 WO2004112235A2 (en) 2003-06-10 2004-06-09 Method and system for transmitting signals with reduced spurious emissions

Country Status (2)

Country Link
US (4) US7409010B2 (en)
WO (1) WO2004112235A2 (en)

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US20090052572A1 (en) 2009-02-26
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