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Schematic diagram of the planar implementation of the compensating hyperbolic bilayer formed by two interconnected metallic grids over ground. Unit cell dimensions are highlighted and and . The left grid is the “source grid”, whereas the right is the “image grid.”
Constant frequency dispersion surfaces showing the focusing mechanism. Numbers indicate frequencies in GHz.
(Color) Photograph of the fabricated structure at . and axes are labeled with column and row numbers, respectively. A node is designated by (row number, column number).
(Color) Simulation and experiment results at resonance and below-resonance frequencies. and axes of the surface plots show node numbers. The vertical axis plots nodal voltages to ground, whereas the and axes designate nodal coordinates.
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