  This letter proposes the design and measurement of a periodic metasurface
that achieves anomalous reflection with reduced RCS in a given direction. A
previous study proposed a semi-analytical model to predict the RCS behaviour of
such a metasurface. This work focuses the discussion on manufacturing and
measurement issues. The synthesis, design specifications, fabrication method
and experimental setup are presented and discussed. Measurement results are
also examined in detail, highlighting some limitations in metasurfaces RCS
measurements. The proposed metasurface effectively achieves the predicted RCS
level reduction in the Floquet direction considered. The agreement between
simulation and experimental results demonstrates the accuracy of the modelling
and the efficiency of the optimisation procedure.
