Figure 2
From: A broadband polarization-insensitive cloak based on mode conversion

Simulated electric field patterns for several situations when TE1 mode is incident from left port.
(a) The empty waveguide with a metallic block. (b) Inside an empty waveguide, two GIMs are attached to its metallic walls. (c) The waveguide in (b) with a metallic block loaded. (d) The GIMs are replaced by the designed samples whose sizes are the same as these on experiment. In simulations, two coupling waveguides with the same width of 22.5 mm are added to both side of the designed device. All metallic blocks in (a), (c) and (d) are the same with a size of 27 mm(x) × 10 mm(y) and indicated by a rectangle in plot.