Figure 4
From: Far-field subwavelength imaging with near-field resonant metalens scanning at microwave frequencies
The experimental far-field image for a U-shaped target.
(a) Structure of the experimental target. The 9 × 9 SRR cells and the U-shaped target composed of seven small loops are printed on the top and bottom of the substrate, respectively. (b) An image of the subwavelength target. The dotted circles are the edge profiles of the small loop sources composing the U-shaped target to be imaged.
