Taming the Electromagnetic Boundaries via Metasurfaces: From Theory and Fabrication to Functional Devices

Figure 46

Self-tuning smart absorber. (a) Schematic of the operational principle. (b) Transmission coefficient of the absorber for a narrow incident wave for various capacitances at 2.75 GHz (left panel) and 3.25 GHz (right panel). (c) Experimental setup (left panel) and measured attenuation of the reflection wave when the incident wave is swept from 2.8 to 3.2 GHz (right panel).

(a)

(b)

(c)