A comparison of exact TM plane wave diffraction by coated wedges and impedance wedges

Lars S. Andersen, Olav Breinbjerg, John T. Moore

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    The purpose of this work is to numerically investigate the accuracy of the standard impedance boundary condition (SIBC) approximation for edge diffraction. To this end, we compare the scattering by coated wedges and SIBC wedges for which the diffracted field from a single edge can be observed without interference from direct fields or reflected fields. Results have been obtained in the case of illumination by a transverse magnetic (TM) uniform plane wave. The analysis of the coated wedge is based on an integral equation formulation combined with a hybrid technique, while the analysis of the SIBC wedge is based on Maliuzhinets' solution. Comparisons have been carried out for a series of configurations including lossy coatings as well as lossless coatings permitting unattenuated propagation of surface waves. The results show that the presence of an edge in a coated structure does not necessarily make the SIBC approximation inapplicable
    Original languageEnglish
    Title of host publicationAntennas and Propagation Society International Symposium AP-S. Digest
    VolumeVolume 1
    Publication date1996
    ISBN (Print)0-7803-3216-4
    Publication statusPublished - 1996
    Event1996 IEEE Antennas and Propagation Society International Symposium - Baltimore, United States
    Duration: 21 Jul 199626 Jul 1996


    Conference1996 IEEE Antennas and Propagation Society International Symposium
    Country/TerritoryUnited States
    Internet address

    Bibliographical note

    Copyright: 1996 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE


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