Fig. 1
From: Spatial localisation and sensing in two dimensions via metasurfaces

Map of a 2D metasurface with a signal source - Feed ’F’ located at \(m_F,n_F\) and a defect ’D’ at \(m_D,n_D\).
From: Spatial localisation and sensing in two dimensions via metasurfaces

Map of a 2D metasurface with a signal source - Feed ’F’ located at \(m_F,n_F\) and a defect ’D’ at \(m_D,n_D\).