Multidomain electromagnetic modelling for installed performance of antennas on aerostructures (IPAS)

Implementation of spectral basis functions in BEM/FEM/GSM Domain Decomposition Methods devoted to scattering and radiation applications

“…In previous works, the reduced operators were computed with the BEM based upon integral equations [17] and with the finite element method [5]. Reduced operators can be expanded in terms of several kinds of expansion functions such as the Rao-Wilton-Glisson (RWG) basis functions used to expand the unknowns in the BEM [19], "modal" numerical basis functions [20] and "deltagaps" basis functions [16]. During collaborative computations, only these reduced operators defined on the coupling surfaces are exchanged between the partners, efficiently protecting each partner's geometrical and material data.…”

Sub-domain methods for collaborative electromagnetic computations

“…We introduce the coupling surface current expansion (7), (8) in the Boundary Element Method (BEM) used for the solution of the Maxwell equations in the frequency domain. The BEM linear system is solved for each test function of the coupling interface.…”

“…On each coupling surface, these basis functions may be chosen as wave-guided modes basis functions [13], the BEM RWG basis functions [12] or 'deltagap' basis functions [9]:…”

“…Sub-domains can also be reduced by the finite element method [5]. Reduced operators can be expanded in terms of several kinds of expansion functions, such as the Rao-Wilton-Glisson (RWG) basis functions used to expand the unknowns in the BEM [12], 'modal' numerical basis functions [13] and 'deltagaps' basis functions [9].…”

“…Recently the multi-domain approach has been assessed and improved for civil applications in the context of antenna interactions with civil airframe structures [8][9][10].…”