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
90\deg
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.