An overview of aircraft electromagnetic interference (EMI) environments and integrated circuit susceptibility or immunity to radio frequency signals, transients, and 400 Hz power, help define the levels on which to base the electrical protection of commercial aircraft avionic equipment. Aircraft electromagnetic spectrum and radio frequency (RF) field strengths are charted profiling the higher levels of electromagnetic voltages encountered by the commercial aircraft wiring. Selected military, urban, and rural electromagnetic field levels are plotted and provide a comparison of radiation amplitudes. Low frequency magnetic fields and electric fields from 400 Hz power systems are charted versus frequency and wire separation to indicate induced voltages on adjacent or neighboring circuits. Induced EMI levels and attenuation characteristics of electric, magnetic, RF fields, and transients are plotted and graphed for common types of wire circuits. The significance of wire circuit returns and shielding is emphasized to highlight the techniques that help block the paths of electromagnetic interference and maintain avionic interface signal quality.


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    Title :

    Avionics electromagnetic interference immunity and environment


    Additional title:

    Unempfindlichkeit der Avionik vor elektromagnetischen Stoerungen


    Contributors:


    Publication date :

    1986


    Size :

    8 Seiten, 12 Bilder, 6 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English







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