A Blind Interference Canceling Technique for Two-Stage Harmonic Rejection in Down-mixers

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    Abstract

    This paper presents practical experiments on a harmonic rejection down-mixer, which offers up to 75 dB of harmonic rejection, without an RF filter. The down-mixer uses a two-stage approach; the first stage is an analog multi-path/multiphase harmonic rejection mixer followed by a second stage providing additional harmonic rejection based on blind adaptive interference canceling in the discrete-time domain. The aim is to show its functional operation. The canceler cannot cope with DC offsets. The DC offsets are removed by highpass filters. The signal paths used to obtain an estimate of the interference must be designed to provide as much attenuation of the desired signal as possible. Front-end nonlinearities and DC offsets are discussed.
    Original languageUndefined
    Title of host publicationProceedings of the 19th Annual Workshop on Circuits
    Place of PublicationVeldhoven
    PublisherSTW
    Pages214-217
    Number of pages4
    ISBN (Print)978-90-73461-56-7
    Publication statusPublished - 28 Nov 2008
    Event19th Annual Workshop on Circuits, Systems and Signal Processing, ProRISC 2008 - Veldhoven, Netherlands
    Duration: 27 Nov 200828 Nov 2008
    Conference number: 19

    Publication series

    Name
    PublisherTechnology Foundation STW
    Number412

    Conference

    Conference19th Annual Workshop on Circuits, Systems and Signal Processing, ProRISC 2008
    CountryNetherlands
    CityVeldhoven
    Period27/11/0828/11/08

    Keywords

    • EWI-14985
    • METIS-255469
    • IR-65351

    Cite this

    Moseley, N. A., Klumperink, E. A. M., & Nauta, B. (2008). A Blind Interference Canceling Technique for Two-Stage Harmonic Rejection in Down-mixers. In Proceedings of the 19th Annual Workshop on Circuits (pp. 214-217). Veldhoven: STW.