Figure 3
From: Spoof Surface Plasmon Polaritons Power Divider with large Isolation
(a) The half oval-ring SSPPs waveguide with a pair of stepped impedances. (b) The designed stepped impedance parameter, in which s_g = 0.2 mm. (c) The simulated |S11| and |S21| magnitudes of the proposed half oval-ring SSPPs waveguide with different lengths of stepped impedances. (d) The electric field distributions at 6 GHz.
