Simultaneous controls of surface waves and propagating waves by metasurfaces

We propose a hybrid metasurface to control surface and propagating waves simultaneously. The hybrid metasurface is composed of planar metamaterial to interact with surface waves and holographic metasurface to modulate propagating waves. As an experimental verification, we design and fabricate a special hybrid metasurface in microwave frequency, which contains a surface-wave Luneburg lens and a focusing holographic surface. Numerical and measured results show multi-functional abilities of the hybrid metasurface in controlling the surface and propagating waves simultaneously. It is expected that the proposed methodology will facilitate applications of surface waves in information processing, near-field detection, and wireless communications.