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A signal processing method to eliminate grating lobes

A signal processing method to eliminate grating lobes in case of array antenna is proposed in this paper. The proposed method of eliminating the grating lobes can be used in the cases where each antenna element information/data is available. By using the proposed method, relation between λ and baseline separation between the two antenna elements need not be less than or equal to λ/2. The proposed method eliminates the Grating lobes without hardware complexity with little processing load. It also reduces the antenna elements giving the same antenna pattern. Gain of the antenna patterns decides the number and the spacing between the antenna elements in the antenna array.