Left-handed and right-handed metamaterials composed of split ring resonators and strip wires

It was shown that the existence of transmission peaks in the regions where the real parts of the electric permittivity and magnetic permeability are expected to be simultaneously negative is not sufficient evidence of LHM behavior. In order to properly determine the sign of the index, the insertion phase for propagation through several lengths of the structure is necessary. Alternately, the dispersion diagrams can be used to determine the sign of the index, In addition, it was shown that both the OS and SS configurations can produce LHM behavior, but that in the SS case, because of the interference between the SRR and SW, the lattice spacing must be smaller than that of the OS case. In other words, the interference between the SRR and SW in the SS case does not completely destroy the potential for LHM behavior, it weakens it.