Fully Coupled Hybrid FEM-UTD Method Using NURBS for the Analysis of Radiation Problems Articles uri icon

publication date

  • March 2008

start page

  • 774

end page

  • 783

issue

  • 3

volume

  • 56

international standard serial number (ISSN)

  • 0018-926X

electronic international standard serial number (EISSN)

  • 1558-2221

abstract

  • A novel hybrid finite element method (FEM) -uniform theory of diffraction (UTD) method for the analysis of radiating structures in the presence of electrically large objects is presented. The hybridization is done in a fully coupled way taking into account mutual interactions between the FEM and UTD regions. The UTD objects are modeled using non-uniform rational B-spline (NURBS) surfaces. Ray acceleration techniques and simple clustering strategies are used to speed up the computation time. Numerical results are presented showing the validity of the method.