Structure of a flat equidistant antenna array with a radial grid

Abstract: The article proposes to consider the radial structure of the placement of radiating elements in the nodes of a flat equidistant antenna array. The known variants of rectangular and hexagonal structures of elements placement in flat antenna arrays are considered. The main calculated ratios of parameters for the radial structure of the pitch are given as well as the linear distances between the emitters in various orthogonal directions, along the radial and angular components. For the proposed structure, using a specific example of an antenna array consisting of nine circles, with a total number of 180 emitters and a uniform amplitude distribution, the radiation patterns in three-dimensional space are calculated, that are represented on the drawing plane by various sections along the angular coordinate φ with a step of 150.The proposed radial structure, unlike the known ones, ensures the identity of the DN with minimal discrepancies from each other in different planes φ at the level of -35 dB.

Keywords: antenna array, antenna array aperture, radiation pattern, radiating elements, side lobe level, antenna array pitch, radial structure