Towards suppression of all harmonics in a polyphase multipath transmitter

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    14 Downloads (Pure)

    Abstract

    This work proposes a direct conversion transmitter architecture intended for cognitive radio applications. The architecture is based on the poly-phase multipath technique, which has been shown to cancel out many of the harmonics, sidebands and nonlinearity contributions of a power up-converter using a large number of signal paths. This work proposes a design only using 8 paths which is able to achieve <−40dBc harmonic suppression for all harmonics, including the dominant 7th and 9th harmonic. This is done with a combination of duty cycle control of the Local Oscillator (LO) waveform and tunable filtering with only a first order roll-off.
    Original languageEnglish
    Title of host publicationIEEE International Symposium on Circuits and Systems, ISCAS 2011
    Place of PublicationPiscataway
    PublisherIEEE
    Pages2185-2188
    Number of pages4
    ISBN (Print)978-1-4244-9472-9
    DOIs
    Publication statusPublished - 17 May 2011
    EventIEEE International Symposium on Circuits and Systems, ISCAS 2011 - Rio de Janeiro, Brazil
    Duration: 15 May 201118 May 2011

    Conference

    ConferenceIEEE International Symposium on Circuits and Systems, ISCAS 2011
    Abbreviated titleISCAS
    CountryBrazil
    CityRio de Janeiro
    Period15/05/1118/05/11

    Keywords

    • METIS-278748
    • IR-77955
    • Graph Transformations
    • EWI-20408
    • Exception Handling
    • Object- Oriented Design
    • Fault Tolerance
    • Design Verification

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