Monostatic and Bistatic Measurements of Metasurfaces on Anechoic Chamber and a Comparison with Electromagnetic Simulations

The paper will be focused on experimentally characterize a metasurface absorber under both a quasi-monostatic and a bistatic set-up configuration. The aim is to introduce most of the difficulties that a researcher may encounter, when characterizing this finite structure and compare them with the simulation, which assumes the metasurface as infinite. Moreover, the limitations of both the quasi-monostatic and bistatic measurements will be introduced, as well as a comparison between them. In addition, several guidelines to retrieve precise measurements are provided and applied to the presented set-ups. These recommendations will be of interest for many authors who want to experimentally characterize their metasurfaces. The latter will be corroborated through the high-quality and precise measurements obtained and shown throughout this paper.