Domain Reduction in Hybrid Technique for Electromagnetic Wave Scattering Problems

This paper proposes a combination of the field matching technique, finite element method and generalized impedance matrix, the main idea of which is to reduce the computational domain by surrounding a scatterer with the smallest convex shape and applying the field matching technique. This approach can be applied for arbitrary shaped scatterers and types of materials and allows for the reduction of the computational domain. In order to verify the validity of the method, several examples have been investigated and compared with other numerical techniques.