Figure 2
From: Sub-wavelength Unidirectional Antenna Realized by Stacked Spoof Localized Surface Plasmon Resonators
Geometry and resonant properties of composite SLSP resonators.
(a) Schematic of the composite resonator. (b) SCS for the composite SLSP resonator with different separations L = 2.4 mm, 3.6 mm, 4.8 mm and 6.0 mm). Left inset: SCS spectrum of the individual sub-resonator I and II.
