Figure 6
From: Radial Photonic Crystal for detection of frequency and position of radiation sources

Real part of the E-field for a point source illuminating 2 RPC shells at a distance of approximately 90 mm to their centres and radiating at a frequency f = 3.8 GHz (q = 3 mode): (a) analytical simulation; (b) ab-initio simulation; (c) measurement results.
Field scale is normalized with respect to the extreme values in each plot.