Switchable metamaterial reflector/absorber for different polarized electromagnetic waves

Abstract

We demonstrate a controllable electromagnetic wave reflector/absorber for different polarizations with metamaterial involving electromagnetic resonant structures coupled with diodes. Through biasing at different voltages to turn ON and OFF the diodes, we are able to switch the structure between nearly total reflection and total absorption of a particularly polarized incident wave. By arranging orthogonally orientated resonant cells, the metamaterial can react to different polarized waves by selectively biasing the corresponding diodes. Both numerical simulations and microwave measurements have verified the performance.

11 pages, 4 figures

References in corpus (4)

• A Perfect Metamaterial Absorber
• A metamaterial absorber for the terahertz regime: Design, fabrication and characterization
• Wide-angle perfect absorber/thermal emitter in the THz regime
• 90 degree polarization rotator using a bilayered chiral metamaterial with giant optical activity

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• Programmable Metasurfaces: State of the Art and Prospects
• Polarization modulation by tunable electromagnetic metamaterial reflector/absorber
• Broadband microwave absorption by logarithmic spiral metasurface
• Reconfigurable Intelligent Surface: Design the Channel -- a New Opportunity for Future Wireless Networks