Figure 5
From: Far-field subwavelength imaging with near-field resonant metalens scanning at microwave frequencies
Two examples of far-field subwavelength imaging in complex environments.
(a) Top view of the target above the metalens and the distribution of the receivers. The target is surrounded by concrete walls. (c) Schematic view of the target above the metalens and the distribution of the receiver. The target is located in a PEC cavity with an open slot. Images of the subwavelength targets in (a) and (c) are shown in (b) and (d), respectively. The dotted circles are the edge profiles of the small loop sources composing the square ring target to be imaged. The dispersion relation of the concrete in (a) is shown in (e).
