Title :
Fully Coupled Multi-Hybrid FEM-PO/PTD-UTD Method for the Analysis of Radiation Problems
Author :
Fernández-Recio, R. ; García-Castillo, L.E. ; Gómez-Revuelto, I. ; Salazar-Palma, M.
Author_Institution :
Dpto. Teoria de la Senal y Com, Umv. Carlos III de Madrid
fDate :
4/1/2007 12:00:00 AM
Abstract :
A multi-hybrid method combining the finite element method (FEM) and several high frequency techniques (HFTs) for the efficient analysis of the radiation and scattering of electromagnetic waves on complex three-dimensional environments is presented. It makes use of FEM for the regions with small and complex features and one or several HFTs for the analysis of the electrically large objects of the structure. The hybridization is done in a fully-coupled way taking into account mutual interactions between the FEM domains and the objects analyzed with HFTs. Two main HFTs are used: physical optics (PO) and the uniform theory of diffraction (UTD) in order to take advantage of the use of distributed and point sources. Physical theory of diffraction (PTD) is also used when needed in order to improve the accuracy of PO
Keywords :
electromagnetic wave scattering; finite element analysis; geometrical theory of diffraction; physical optics; physical theory of diffraction; HFT; PTD; electromagnetic wave scattering; finite element method; fully coupled multihybrid FEM-physical optics; high frequency techniques; physical theory of diffraction; uniform theory of diffraction; wave radiation problems; Boundary conditions; Electromagnetic analysis; Electromagnetic radiation; Electromagnetic scattering; Finite element methods; Optical scattering; Physical optics; Physical theory of diffraction; Radar antennas; Radar scattering; Electromagnetic coupling; finite element method (FEM); hybrid solution methods; physical optics (PO); physical theory of diffraction (PTD); uniform theory of diffraction (UTD);
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2007.892416
