This paper reports an experimental investigation of surface electromagnetic wave (SEW) energy distribution on railroad tracks. Radial field distribution of SEW on 112-lb/yd rails were examined utilizing a dipole diode detector. Laboratory and on site measurements were made. The field strength distribution data at frequencies 3.000, 6.000, and 9.733 GHz show that the main part of the SEW TE mode energy (almost 90 percent) is on the head of the rail. Use of dielectric augmentation on the side of rails resulted in lower attenuation of the propagating SEW. Thick dielectric strip augmentation data shows enhancement of SEW propagation is agreement with McAulay. The intertrack coupling and the characteristic frequency response versus field strength at varied distances from the source were also examined. These data indicate propagation distances of more than 2000 m are possible using dielectric augmentation.


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    Title :

    Surface electromagnetic wave field strength measurements on railroad tracks


    Additional title:

    Messungen der Oberflaechenfeldstaerke elektromagnetischer Wellen auf Eisenbahn-Gleisen


    Contributors:
    Lai, B.C.H. (author) / Goben, C.A. (author)


    Publication date :

    1980


    Size :

    6 Seiten, 5 Bilder, 2 Tabellen, 11 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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