Localized Spoof Surface Plasmon Skyrmions Excited by Two-Conductor Line

In our previous study, localized spoof surface plasmon (LSSP) skyrmions were excited by microstrip line and coplanar waveguide, which achieved the guided wave excitation of the LSSP skyrmions. In this study, the LSSP skyrmions are excited by another kind of transmission line, two-conductor line. Compared with the counterparts excited by the microstrip line and the coplanar waveguide, the structure consists of only one space-coiling meta-structure, which has the advantage of simple structure. It is demonstrated that the LSSP skyrmions excited by the two-conductor line also have the favorable characteristics of topological robustness and near-equidistant multi-resonant response. This study provides a new idea for the planar integration of the LSSP skyrmions.