Circular Mesh-Based Physical Optics for Scattered Field Prediction

In this letter, a physical optics (PO)-based scattered field calculation method is introduced. The proposed method divides the object into circular meshes. This technique exploited the analytical solution of scattered fields from circular plates to make it compatible with the PO surface integral framework. Therefore, it has no need for triangular-based surface reconstruction. The proposed method is compared to that of the PO with triangular mesh in terms of scattered electric power from a square plate and a spherical object. Given the averaged resolution of surface point at 0.04 of the wavelength, the proposed method yielded almost identical scattered power to those from the PO using triangular mesh.