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Analysis of Complex Electromagnetic Structures by Hybrid FDTD/WCIP Method

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Author(s): Gharbi Ramzi | Zairi Hassen | Trabelsi Hichem | Baudrand Henri

Journal: Journal of Electromagnetic Analysis and Applications
ISSN 1942-0730

Volume: 04;
Issue: 12;
Start page: 497;
Date: 2012;
Original page

Keywords: FDTD | Hybrid Finite-Difference Time-Domain (FDTD) | Hybrid Techniques | WCIP Method

ABSTRACT
This paper proposes a hybrid full-wave analysis using Finite-Difference Time-Domain (FDTD) and Wave Concept Iterative Process (WCIP) methods, developed to analyze locally arbitrarily shaped microwave structures and Multilayer Planar structure. Using the equivalence principle, the original problem can be decomposed into two sub regions and solve each sub region separately. An interpolation scheme is proposed for communicating between the FDTD fields and WCIP wave, which will not require the effort of fitting the WCIP mesh to the FDTD cells in the interface region. This method is applied to calculate the scattering parameters of arbitrary (3-D) microwave structures. Applying FDTD to 3D discontinuity and WCIP to the remaining region preserves the advantages of both WCIP flexibility and FDTD efficiency. A comparison of the results with the FDTD staircasing data verifies the accuracy of the proposed method.
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