Reduction of monostatic and bistatic radar cross section of antenna arrays

Any antenna mounted on complex platforms such as ships or planes significantly contributes to the radar signature of an object and increases its detectability as a potential target. Therefore it is important to find solutions which allow mitigating this drawback without compromising the radiative properties of the system. In this work an analysis of the possible improvements able to reduce the Radar Cross Section (RCS) of an antenna array is addressed both in the monostatic and bistatic case at normal and oblique incidence. Different superstrates comprising hybrids FSS configurations are investigated for decreasing the RCS of a slot antenna array although the presented strategy can be successfully adopted for any other planar array.