Electromagnetic Scattering Analysis for Partial Modification Problems of Dielectric Objects

When a dielectric object undergoes partial changes, its impedance matrix is modified accordingly. As the object’s size increases, the number of unknown variables also increases, resulting in higher computational demands. The traditional Method of Moments (MoM) is notably time-consuming for addressing such problems. To overcome this challenge, this paper introduces a combined approach using the binomial method and the reduced basis function method. This approach leverages the information from the original impedance matrix to efficiently compute the inverse of the modified matrix. And this method can effectively reduce the calculation time.