Switchable metamaterial reflector/absorber for different polarized electromagnetic waves

TL;DR

This paper presents a switchable metamaterial device capable of toggling between reflecting and absorbing electromagnetic waves based on polarization, using diode-coupled resonant structures verified through simulations and measurements.

Contribution

It introduces a controllable, polarization-sensitive metamaterial that can switch between reflection and absorption states via diode biasing, a novel approach for dynamic electromagnetic control.

Findings

Achieved polarization-dependent switching between reflection and absorption.

Validated device performance through numerical simulations and microwave experiments.

Demonstrated effective control of electromagnetic wave behavior with biasing.

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.