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NURBS modeling for higher-order basis functions

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2 Author(s)
Zi-Liang Liu ; Temasek Labs., Nat. Univ. of Singapore, Singapore, Singapore ; Juan Yang

A novel scheme of combining non-uniform rational B-splines (NURBS) model with higher-order moment method (HOMM) is presented. The mesh precision of conforming to practical object is an important factor for HOMM to yield accurate results. In this paper, NURBS technique is employed to model complex objects accurately with large curved Bezier patches and no factitious geometric discontinuities are introduced between the adjoining patches. The higher-order modified Legendre basis functions are defined on Bezier patch. As a result of the combination of NURBS model with HOMM, the accuracy of results is greatly improved compared with HOMM on bilinear quadrilateral (BQ) model, meanwhile, the number of unknowns is much reduced. Numerical results show that NURBS-HOMM is an efficient technique to solve the electromagnetic (EM) problems of complex electrically large objects.

Published in:

Microwave Conference, 2009. APMC 2009. Asia Pacific

Date of Conference:

7-10 Dec. 2009

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