Figure 5: Three situations for measurements and simulations and the predicted far-field patterns.
From: Three-dimensional broadband ground-plane cloak made of metamaterials
(a) The flat ground plane, with a single-peak reflection at the mirror-reflecting direction of the incident wave. (b) The ground plane with a cone-shaped metallic perturbation, with multi-peak reflections. (c) The ground plane with both perturbation and 3D cloak, with a single-peak reflection at the mirror-reflecting direction of the incident wave. The electric field amplitude in the top half of the panels is normalized to unity.
