Electronic lobe switching by 90° corner reflector antenna with ferrite cylinders

Simultaneous matrix equations are obtained for solving the problem of scattering by many different homogeneous ferrite cylinders located in front of a corner reflector. The equations are based on the extended integral equations derived from the reciprocity theorem in the cylinders and on the method of images. After the problem of plane-wave scattering is treated, various radiation patterns for the corner reflector antenna with some circular ferrite cylinders are exhibited. From the latter numerical results the possibilities of one-lobe or two-lobe switching and lobe extinction by varying the dc magnetic fields applied to the cylinders become clear.