Patent ID: 7151498

Claim:
A direct radiating array (DRA), comprising: a plurality of elements, collectively defining a DRA main lobe nearest a DRA boresight and a set of grating lobes nearest the DRA main lobe; wherein each of the grating lobes in the set of grating lobes is angularly displaced from the main lobe by a grating lobe angle that varies asymmetrically about the DRA main lobe; wherein the plurality of elements comprises: a first row of elements extending in a first direction, each element of the first row of elements is spaced apart from an adjacent element in the first row of elements by a distance V; and a second row elements parallel to the first row of elements, the second row of elements offset from the first row of elements in the first direction by a stagger distance S, each element of the second row of elements is spaced apart from an adjacent element of the second row of elements by the distance V, and the second row of elements is spatially displaced from the first row of elements in a direction perpendicular to the first direction by a distance H: and wherein the stagger distance S≠½ V.