Inverse Diffraction Theory and Computation of Minimum Source Regions of Far Fields

Figure 5

Estimated UWSC sets (shown in black), for the total far field due to a source (infinite line source in 3D space or equivalently point source in the 2D formulation) and a circular cylinder (PEC or dielectric) in its vicinity. The estimate for the minimum convex source region of the scatterer source depends on the proximity to the radiating source. The closer it is, then the larger the minimum source region needs to be in order to be able to radiate the corresponding scattering field.