Figure 2
From: Switchable unidirectional waves on mono- and diatomic metamaterials
Power flow ratio \(P_\mathrm{l}/P_\mathrm{r}\) for an axial array with \(\kappa =0.13\) (a) and a planar array with \(\kappa =-0.13\) (b). \(N=27\). Lossless case. Analytical model. Excitation in the central elements 14 and 15, \(V_{14}=\exp (j\psi )\) and \(V_{15}=1\). Elements 1 and 27 are matched to eliminate reflections from the ends. White dashed line corresponds to the analytical conditions of unidirectional power flow from Eqs. (10 and 11).
