Higher order hierarchical method of moments for 3-D electromagnetic scattering

A higher order method of moments (MoM) is developed for 3-D electromagnetic scattering based on hierarchical higher order basis functions in the curvilinear triangular element in this paper. An improved Duffy method is presented in the higher order moment method. Numerical experiments show that the improved Duffy method leads to a higher accuracy and faster convergence version of higher-order hierarchical MoM.