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- W4386207934 abstract "Electromagnetic scattering from a two-dimensional 2-D groove filled with a lossy dielectric in an infinite conducting plane is studied using the extended method of auxiliary sources EMAS. The scattering structure contains two strongly coupled mediums, the perfect electric conductor (PEC) and the electric lossy dielectric which are in direct contact. In order to approximate the electromagnetic fields in each domain according to the EMAS, fictitious current sources satisfying the Helmholtz equation for each considered domain, are introduced and distributed around each physical boundary. Three bases of auxiliary sources have to be selected and spread in such way to satisfy the boundary conditions between the dielectric, the PEC, and the upper free space and to model the strong coupling affecting the structure. Two bases were built, one for the filled dielectric and the other at the PEC. The boundary conditions lead to a linear system from which we easily deduce the magnitude and the phase of the unknown currents. Hence, the scattered field is determined as a function of these currents. To validate the accuracy of the EMAS, the numerical experiment was carried out on two grooves, one is filled with air and the other with a lossy dielectric. For a transverse magnetic (TM) incidence, their backscattering radar cross-sections, have been calculated and the results are in good agreement with the literature." @default.
- W4386207934 created "2023-08-28" @default.
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- W4386207934 date "2023-07-03" @default.
- W4386207934 modified "2023-10-16" @default.
- W4386207934 title "Scattering Analysis from Lossy Dielectric Loaded Grooves Using the Extended Method of Auxiliary Sources" @default.
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- W4386207934 doi "https://doi.org/10.1109/piers59004.2023.10221328" @default.
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