Title :
A 3D vector variational hybrid finite-element/boundary element formulation for the scattering analysis of arbitrary infinite doubly periodic arrays
Author :
Lucas, E.W. ; Fontana, T.P.
Author_Institution :
Westinghouse ESG, Baltimore, MD, USA
Abstract :
The authors summarize a very general vector variation E-field formulation for the problem of plane wave scattering from infinite doubly periodic arrays of volume cells. The cells may contain 3D arbitrary and possibly composite scatterers. The stationary functional was derived using the general variational electromagnetics methodologies of S.K. Jeng (1983). The exact radiation boundary condition is absorbed into the variational functional via surface patch boundary elements. The volume is discretized using tetrahedral edge-based vector finite elements.<>
Keywords :
boundary-elements methods; electromagnetic wave scattering; finite element analysis; 3D scatterers; BEM; FEA; arbitrary infinite doubly periodic arrays; boundary condition; electromagnetic scattering; hybrid finite-element/boundary element formulation; plane wave scattering; stationary functional; surface patch boundary elements; tetrahedral edge-based vector finite elements; variational electromagnetics; vector variation E-field formulation; volume cell array; Antenna arrays; Boundary conditions; Eigenvalues and eigenfunctions; Electromagnetic radiation; Electromagnetic scattering; Finite element methods; Geometry; Green´s function methods; Planar arrays; Power engineering and energy;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1991. AP-S. Digest
Conference_Location :
London, Ontario, Canada
Print_ISBN :
0-7803-0144-7
DOI :
10.1109/APS.1991.175065
