Figure 3
From: Broadband Frequency-Selective Spoof Surface Plasmon Polaritons on Ultrathin Metallic Structure

The dispersion curves of single-side and double-side corrugated metallic strips.
From: Broadband Frequency-Selective Spoof Surface Plasmon Polaritons on Ultrathin Metallic Structure
The dispersion curves of single-side and double-side corrugated metallic strips.