DocumentCode :
2653562
Title :
Efficient computation of the reaction terms to fill the interaction matrix in the Characteristic Basis Function Method (CBFM)
Author :
Giovampaola, Cristian Della ; Mittra, Raj ; Du, Kai ; Toccafondi, Alberto
Author_Institution :
Dept. of Inf. Eng., Univ. of Siena, Siena, Italy
fYear :
2009
fDate :
1-5 June 2009
Firstpage :
1
Lastpage :
4
Abstract :
In this paper, an efficient method for the computation of the reduced matrix elements is presented. The paper begin by modeling the scatterer as a non-uniform rational B-spline (NURBS) surface. Since a NURBS representation is used in most of the CAD design softwares, this formulation allows us to directly connect the output of the CAD software with the EM solver. In order to decrease the number of low-level basis function needed to represent the CBFs in each block, a linear-phase model is considered in the integrand for the evaluation of the scattered field. Furthermore, to optimize the number of low-level basis functions defined on each block, an adaptive meshing algorithm is utilized to partition the domain of integration. These steps serve to lower both the memory requirements and the CPU time for computing the reduced matrix elements, as compared to the conventional methods.
Keywords :
electromagnetic wave scattering; matrix algebra; splines (mathematics); characteristic basis function method; interaction matrix; linear phase model; nonuniform rational B-spline surface; reduced matrix elements; Computational efficiency; Design automation; Geometry; Iterative algorithms; Moment methods; Optical scattering; Optical surface waves; Spline; Surface reconstruction; Surface topography;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Antennas and Propagation Society International Symposium, 2009. APSURSI '09. IEEE
Conference_Location :
Charleston, SC
ISSN :
1522-3965
Print_ISBN :
978-1-4244-3647-7
Type :
conf
DOI :
10.1109/APS.2009.5172074
Filename :
5172074
Link To Document :
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