Scattering Analysis of Multiobject Electromagnetic Systems Using Stepwise Method of Moment

Stepwise method of moment is proposed to analyze scattering properties of multiobject electromagnetic systems. In this approach, the final current coefficients come from two parts: independent current coefficients and mutual coupling coefficients for each subblock. This approach avoids calculating the inverse matrix of dense impedance matrix by seeing each subblock as an independent element in the calculation of mutual coupling effects among different subblocks. This scheme greatly decreases memory cost of the approach and makes it have the ability to deal with large-scale multiobject problems. Finally, this approach is combined with an iterative process to further improve its accuracy.