Accurate and Time-Efficient Electromagnetic Scattering Analysis of Thick Impenetrable Planar Structures
Authors:
- 24 November 2025
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Antennas and Propagation
- Vol. 74 (2) , 1780-1791
Abstract
The scattering analysis of perfectly conducting plates, with very small electrical thickness, in the free space is normally carried out through the zero-thickness approximation, which arises from modelling the whole closed surface enclosing the plate as an open surface. The resulting accuracy, though acceptable in many practical applications, deteriorates drastically for growing plate thicknesses or under grazing-angle incidence. In this paper, we provide a thorough description of the recently proposed thick-plate approach, which, while maintaining the agile single-mesh management of the zero-thickness scheme, offers improved accuracy with restricted computational overhead for a wider range of plate thicknesses or plane wave incidences. The computed thick-plate RCS solution deviation as compared with the zero-thickness and full method-of-moment solutions is quantified for an illustrative variety of flat perfectly conducting structures with different electrical dimensions, shapes (rectangular or circular), rim contour (straight or rounded) and plane wave incidence (perpendicular or grazing).Keywords
Funding Information
- [Ministerio de Ciencia, Innovación y Universidades (MICIU), Agencia Estatal de Investigación (AEI), Spain, and the European Regional Development Fund (FEDER) of the European Union (UE)] (PID2020-118410RB-C21)
- [Ministerio de Ciencia, Innovación y Universidades (MICIU), Agencia Estatal de Investigación (AEI), Spain, and the European Regional Development Fund (FEDER) of the European Union (UE)] (PID2023-146245OB-C21)
- [Ministerio de Ciencia, Innovación y Universidades (MICIU), Agencia Estatal de Investigación (AEI), Spain, and the European Regional Development Fund (FEDER) of the European Union (UE)] (PID2022-136869NB-C31)
- [Ministerio de Ciencia, Innovación y Universidades (MICIU), Agencia Estatal de Investigación (AEI), Spain, and the European Regional Development Fund (FEDER) of the European Union (UE)] (PDC2022-133091-I00)
- Research Group funded by the Catalan Agency for Management of University and Research Grants (2021 SGR 01415)
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