In this letter, a planar left-handed propagating medium consisting of a coplanar waveguide
(CPW) inductively coupled to split ring resonators (SRR) and periodically loaded with
narrow metallic wires is proposed. The wires make the structure behave as a microwave
plasma with a negative effective permittivity which covers a broad frequency range. The
negative permeability required to achieve left-handed wave propagation is provided by the
rings in the vicinity of their resonant frequency. The result is a structure which allows …