Metamaterial in planar technology exhibiting negative refractive index for arbitrary incident plane wave polarization

Magnetic and negative index metamaterials (NIM) have attracted considerable attention because of their unusual microwave and optical properties [1] and potential applications, such as, for example, rdquoperfect lensesrdquo [2]. The latter require a negative refractive index, which can be realized by a negative electric permittivity and a negative magnetic permeability at the same frequency. Most NIM implementations to date have utilized the topology proposed by Pendry [2]-[4] consisting of split-ring resonators (SRRs) providing the negative mu and continuous wires providing the negative epsiv.