Fig. 3: The proposed meta-atom with 2nd-order Debye relaxation for wideband phase tailoring.
From: 2nd-Order Debye relaxation in electromagnetic metasurfaces for wideband dispersion engineering
a Schematic illustration of the QEA meta-atom. b the reflection amplitude under RCP and LCP wave illumination. c the surface currents on the structure and ground sheet at (i) 7.0 GHz and (ii) 12.0 GHz. The top row is the surface currents induced by the RCP wave illumination, while the bottom row is the surface currents induced by the LCP wave illumination. d the phase (i) and amplitude (ii) response to the different y under RCP wave illumination
