Active electronically scanned tiled array antenna

This paper describes the results of a project which is aimed at making a step change in AESA build technology by moving to a `tile´ technology to provide much lighter, cheaper arrays. The initial application is an affordable 2-D scanning array whose design goals were to achieve azimuth and elevation beamsteering with linear polarization over a 15%-20% bandwidth. The prototype antenna described here is an array of twenty elements in azimuth by eight in elevation. The features of the tiled array are described in the paper and measured radiation patterns are presented which agree well with modeled results.