Scattering Control of Electromagnetic Waves via Space-Modulation Metasurface

Controlling the scattering of light or electromagnetic waves are conventionally realized based on the different phases profile of metasurfaces elements. However, this approach is limited to the operating frequency bandwidth and cannot achieve such functionality as frequency beam-scanning. Here, we present a concept of space-modulated metasurface in which the structure is making up with the non-resonated elements. We show that the design can achieve both frequency beam-scanning and fixed-frequency beam-scanning. Also, it provides a large operation bandwidth comparing to the conventional metasurface-based resonating structure. Finally, we fabricate the sample, and the measured responses show reasonable agreement with the simulated results.