On a simple method of obtaining sidelobe reduction over a wide angular range in one and two dimensions

摘要: In many communications and radar applications, one is confronted with interfering signals originating in a predefined angular sector. such case, would like to design the antenna be insensitive that sector while maintaining high sensitivity direction of its main beam. Depending on particular situation, may desire either or both beam suppressed steerable. treating this problem, we consider initially simple case one-dimensional linear array 2N+1 discrete radiating elements. This was treated patent disclosure by Michael A. Kott (1979) which he described method for sidelobe cancellation involving use an auxiliary interferometer consisting two elements added array, at each end. It can shown uniform taper is, mathematical sense, ideal Kott's scheme. Extending his work, it further entire concept quite naturally generalized dimensional steerable pencil thus providing suppression region independently any desired position outside regardless beam-steering angle.