Experimental Verification of a Harmonic-Rejection Mixing Concept using Blind Interference Canceling

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    Abstract—This paper presents the first practical experiments on a harmonic rejection downconverter, which offers up to 75 dB of harmonic rejection, without an RF filter. The downconverter uses a two-stage approach; the first stage is an analog multipath/ multi-phase 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 and to find practical performance limitations. Measurement results show that the harmonic rejection of the downconverter is insensitive to frontend nonlinearities and LO phase noise. 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.
    Original languageUndefined
    Title of host publicationProceedings of the 2008 European Wireless Technology Conference (EuWIT)
    Place of PublicationLonden
    PublisherHorizon House Publications Ltd
    Number of pages4
    ISBN (Print)978-2-87487-005-7
    Publication statusPublished - 27 Oct 2008
    EventEuropean Wireless Technology Conference, EuWIT 2008 - Amsterdam, the Netherlands
    Duration: 27 Oct 200828 Oct 2008

    Publication series

    PublisherHorizon House publications LTD


    ConferenceEuropean Wireless Technology Conference, EuWIT 2008
    Other27-28 October 2008


    • EWI-14903
    • METIS-255448
    • IR-65312

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