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On the testing of the magnetic field integral equation with RWG basis functions in method of moments
Rius Casals, Juan Manuel; Úbeda Farré, Eduard; Parrón Granados, Josep
Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. ANTENNALAB - Grup d'Antenes i Sistemes Radio
For electromagnetic analysis using method of moments (MoM), three-dimensional (3-D) arbitrary conducting surfaces are often discretized in Rao, Wilton and Glisson basis functions. The MoM Galerkin discretization of the magnetic field integral equation (MFIE) includes a factor Ω0 equal to the solid angle external to the surface at the testing points, which is 2π everywhere on the surface of the object, except at the edges or tips that constitute a set of zero measure. However, the standard formulation of the MFIE with Ω0=2π leads to inaccurate results for electrically small sharp-edged objects. This paper presents a correction to the Ω0 factor that, using Galerkin testing in the MFIE, gives accuracy comparable to the electric field integral equation (EFIE), which behaves very well for small sharp-edged objects and can be taken as a reference
Peer Reviewed
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica
Radio waves -- Propagation.
Integral equations
3D arbitrary conducting surfaces
Electrically small sharp-edged objects
Electromagnetic analysis
Electromagnetic wave scattering
Garlekin discretization
Magnetic field integral equations
Method of moments
Radar cross-sections
RWG basis functions
Rao Wilton and Glisson basis functions
Ones de ràdio -- Propagació
Equacions integrals

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