Electromagnetic Scattering from Rectangular Cylinders with Wedge Cavities

Analysis of electromagnetic scattering plays an important role in target identification and radar cross section (RCS) reduction. Previous numerical studies have been performed to investigate the scattering problems of parallel plate waveguide cavities and conducting polygons using a technique called the point matching method (PMM). This technique is based on a kind of mode matching technique for which the whole physical space is divided into various sub-regions. The electromagnetic field in each region can be expanded by using the mode which satisfies the wave equation in the local coordinate system and boundary condition. The advantage of this technique is that the computational results are very precise and considered as reference solutions. In this paper, we have modified the field decomposition of this method to investigate the electromagnetic scattering from polygonal geometries with wedge cavities. The bistatic RCS has been investigated for a rectangular cylinder with various shapes and sizes of cavities