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In this paper, a beam-adjustable metasurface (BAM) is realized based on the plasma metamaterial with a dielectric matching layer technique, which is a novel phase compensation method. In order to realize phase compensation from 0° to 360°, the dielectric matching layers are added above the BAM to compensate the phase. The added dielectric layers can have different refractive indices or different thicknesses. Compared with the conventional phase compensation methods, such a method has an universal adaptability, and the phase curve of unit cell does not need to cover 0° ~ 360°. The elements of the BAM can be reconstructed by adjusting the excitation region of the plasma resonance structures to achieve spatial beam scanning. The simulation results show that the proposed BAM has a good performance. It provides that such a novel idea can help to design the novel BAMs to obtain the adjustable and scannable reflective beam in space.

A Design of the Beam-Adjustable Metasurface Based on the Plasma Metamaterial with the Dielectric Matching Layers