A 16×16 ka band aperture-coupled microstrip planar array

This paper presents a corporate-fed 16x16 aperture-coupled microstrip antenna array operating at 35 GHz. The design consists of two stacked substrate layers separated by a common ground plane. This paper shows the basic geometry of a single-element, aperture-coupled microstrip antenna. The microstrip antenna elements are printed on the upper antenna substrate, whereas the feed network is printed on the lower feed substrate. Electrically small, rectangular apertures in the ground plane couple the antenna elements to the feed network.