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Efficient modelling of curved surfaces by planar patches and wire grids for electromagnetic scattering
Author(s) -
Heras Fernando Las,
Jambrina J. L. Fernández
Publication year - 1995
Publication title -
international journal of numerical modelling: electronic networks, devices and fields
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.249
H-Index - 30
eISSN - 1099-1204
pISSN - 0894-3370
DOI - 10.1002/jnm.1660080604
Subject(s) - polyhedron , scattering , radar cross section , method of moments (probability theory) , planar , integral equation , computational electromagnetics , grid , electric field integral equation , electromagnetic field , geometry , cross section (physics) , mathematical analysis , field (mathematics) , physics , mathematics , classical mechanics , computer science , optics , statistics , computer graphics (images) , quantum mechanics , estimator , pure mathematics
The scattering of conducting regular polyhedrons of resonant size is studied by means of the electrical field integral equation (EFIE) and the method of moments (MoM). Two models are generated for each polyhedron, a wire grid model and a triangular patch model. Two numerical codes associated with those modelling techniques are used to obtain the radar cross section (RCS) of the polyhedrons. The calculated results are compared with the analytical results of the scattering of a perfectly conducting sphere. Practical criteria relating geometric properties of the sphere and the polyhedrons are investigated for the modelling of curved surfaces by facets in electromagnetic simulations.