FLAPS reflector antennas

A flat parabolic surface (FLAPS) reflector is a thin (planar or conformal) surface consisting of an array of elements, each functioning as a radiator and phase shifter. Unlike a conventional planar array, however, the elements on the FLAPS surface are spatially fed using a feed assembly, as in a conventional reflector system. This results in an antenna technology that offers the advantages of both planar arrays and reflector systems. Additionally, FLAPS technology offers packaging and deployment ease and is suitable for a variety of manufacturing processes and procedures using low-cost materials. Other features, such as polarization control, large apertures with low windloading, and low-cost electronic beam switching, are also possible. Initially developed for defense microwave and millimeter-wave radar applications, FLAPS antennas are now being developed and fielded in many defense as well as commercial radar and communications systems