2-D Planar Wide-Angle Scanning-Phased Array Based on Wide-Beam Elements

This letter presents a novel two-dimensional planar-phased array with wide-angle scanning performance. A parasitic pixel layer-based antenna is used as the array element. The antenna optimized with a multiobjective genetic algorithm has wide beamwidth in both xoz- and yoz-planes. A 64-element planar (8 × 8) array is fabricated and measured to validate its scanning performance. With the uniform and optimized inputs, respectively, applied to the high- and low-elevation areas, the measured results show that the phased array is able to scan its main beam from -75° to +75° in both xoz- and yoz-planes, and it supports 3-dB beam coverages from -85° to +85° in the xoz-plane and from -85° to +80° in the yoz-plane.