A Signal-Interleaving Complex Bandpass Sigma-Delta Converter

Paul Emmanuel Wad

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    Abstract

    Complex or quadrature Sigma-Delta converters operate on complex signals, i.e. signals consisting of a real and an imaginary component, whereas conventional converters operate only on real signals. The advantage of complex signal processing in the discrete-time domain is that the entire sampling frequency bandwidth - not just half of it - is available, and that network zeros and poles can be placed anywhere without having to appear in complex conjugate pairs. This paper demonstrates how these properties can be used to design complex bandpass Sigma-Delta converters with a better noise performance than conventional converters, and a new signal-interleaving switched-capacitor architecture is derived for these complex converters.
    Original languageEnglish
    Title of host publicationProc. 15th NORCHIP Conference
    Place of PublicationCopenhagen
    PublisherTechnoconsult
    Publication date1997
    Pages344-351
    Publication statusPublished - 1997
    Event15th NORCHIP Conference - Tallinn, Estonia
    Duration: 10 Nov 199711 Nov 1997

    Conference

    Conference15th NORCHIP Conference
    CountryEstonia
    CityTallinn
    Period10/11/199711/11/1997

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