Modification of Backscattering of a Sphere by Attaching Loaded Wires

A new technique for modifying the backscattering cross section of a metallic sphere is presented. This method consists of attaching thin, loaded wires symmetrically to the sphere. When this composite structure is illuminated by a plane wave, currents are induced on the sphere and the loaded wires. The induced current on the wires can be modified by the proper adjustment of loading impedance in such a way that the total backscattering from the composite structure is either minimized or maximized. Experimental and theoretical studies on this method are presented and the results compared. A technique for bandwidth improvement of this method is also included.