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Angular dependence for a PC of dielectric (FR4) cylinders with and in air. The rectangular unit cell with ratio of sides 2:1 is shown in insert. The curves correspond to the filling fractions, , 0.1, 0.15, 0.2, 0.247 (sample used in the experiment), 0.25, and 0.3. Strong anisotropy in appears for .
extracted from the transmission measurements of the -mode for two directions of propagation. Solid and dashed curves present the numerical results. The inset shows the orientation of the unit cell.
The same as in Fig. 2 but for the -polarization.
Upper panel: measured ratio vs frequency for the -mode (circles) and -mode (triangles). Dashed lines show average over frequency values. Lower panel: numerical results for (thin) and (thick) vs frequency extracted from the numerical simulation. Note that at low frequencies the anisotropy for the -mode vanishes.
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