Mitigation of Unwanted Forward Narrow-band Radiation from PCBs with a Metamaterial Unit Cell

Andrea Ruaro, Jesper Thaysen, Kaj Bjarne Jakobsen

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    Abstract

    Mitigation of EMI from a PCB is obtained through the use of a metamaterial unit cell. The focus is on the reduction of narrow-band radiation in the forward hemisphere when the resonant element is etched on a layer located between the source of radiation and the ground plane. As opposed to previous
    publications in the literature, the aim of this work is the application of a filter to scattered radiation, generalizing the former characterizations based solely upon transmission lines’ insertion loss. The radiating area accounts for traces and components placed on the top layer of a PCB and is simulated via a patch
    antenna. The study exhibits how the radiation pattern and the electric field on the patch antenna change within and outside the resonance bandwidth of the parasitic element. An EMC assessment provides experimental verification of the operating principle.
    Original languageEnglish
    Title of host publicationProceedings of European Microwave Conference 2013
    Number of pages4
    PublisherEuMA
    Publication date2013
    Pages939-942
    ISBN (Print)978-2-87487-031-6
    Publication statusPublished - 2013
    EventEuropean Microwave Conference 2013 - Nuremberg, Germany
    Duration: 6 Oct 201311 Oct 2013
    Conference number: 43

    Conference

    ConferenceEuropean Microwave Conference 2013
    Number43
    Country/TerritoryGermany
    CityNuremberg
    Period06/10/201311/10/2013

    Keywords

    • Metamaterial filters
    • Planar filters
    • Electromagnetic interference (EMI)
    • Electromagnetic compatibility (EMC)
    • Printed circuit boards (PCB)

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