Figure 5
From: Investigation of mechanism: spoof SPPs on periodically textured metal surface with pyramidal grooves
(a) Dispersion relations of the waveguide with trapezoidal grooves and their equivalent waveguides. (b) Dispersion relations of the waveguide with slanted grooves and their equivalent waveguides. The symbols represent the simulated results for the waveguide with trapezoidal and slanted grooves. The curves denote the analytical results for the equivalent waveguides.
