Experimental research of magnetic plasmon polaritons in two-dimensional metamaterials based on microstrip lines

The magnetic plasmon polaritons (MPPs) and their slow wave effect are experimentally studied in the two-dimensional (2D) ENG/MNG (ε-negative materials/μ-negative materials) metamaterials based on microstrip lines’ structure. Electric field mainly locates at the ENG/MNG interface and decays in the ENG materials and MNG ones, as reveals evident MPPs characteristics. MPP waves propagate slowly along the ENG/MNG metamaterials with opposite group and phase velocities, as is studied through the time-domain analysis. Theoretical analysis agrees well with CST simulation and microwave measurement.