Active electronically scanned array (AESA) antennas have elements arranged in an isosceles triangle configuration.

Abstract

The invention proposes an active electronically scanned array (AESA) antenna with elements arranged in an isosceles triangle. Antenna elements in the same row are spaced dx apart; between rows, elements are arranged in an alternating pattern, with even rows remaining constant and odd rows shifted horizontally by dx / 2, thus forming an isosceles triangle between adjacent antenna elements in two rows. Thanks to this arrangement, the isosceles triangle-shaped array is capable of dispersing side lobe energy diagonally instead of concentrating it horizontally and vertically as in a square array. This significantly reduces side lobe levels when scanning in space, particularly effective when scanning at angles up to 60°. This is while ensuring ease of fabrication, manufacturing, and mechanical integration for AESA radar applications.

Images