Arrays of overlapping sub-arrays for improved sidelobe level performance

We examine the use of overlapped sub-arrays for improving the sidelobe performance. All the computations assume a linear array of 64 elements with a half wavelength spacing at the center frequency. The array is divided into 8 equally spaced sub-arrays with 8 elements for each sub-array. Time delay steering is employed at the sub-array level and elements of each sub-array have phase shifters that are set at the center frequency for the central beam. We show schematic representations of the array for the non-overlapping and overlapping architectures respectively. Only four elements per sub-array are shown for simplicity