Experimental validation of camouflaging a high-index dielectric scatterer with metasurfaces

A high-index dielectric scatterer is camouflaged with respect to a low-index dielectric reference by incorporating buried metasurfaces within the scatterer's volume. The metasurface-tuned scatterer is analytically modeled with transmission lines and a proof-of-concept prototype is fabricated and measured in the X-band. Experimental results of the scattering suppression phenomenon is presented in the near-field and far-field regions for both normal and oblique incident illuminations. This study presents metasurface-tuning as a frequency adjustable, polarization insensitive alternative tuning solution to efficiently camouflage dielectric scatterers, such as mechanical joints in seamed-radome structures.