In lots of reflectarray metasurfaces including this paper : Experimental demonstration of reflectarray antennas at terahertz frequencies.pdf (1.8 MB) there is figure (Fig. 3a in this article) which shows the phase of the reflected wave according to change of a parameter in a single cell such as diameter. Does anybody knows how to create such figure? I have created a simple single cell SingleCell.fsp (261.1 KB) metasurface.
Thanks in advance.