Bandwidth enhancement of a patch antenna using a wire-ferrite substrate

A wire-ferrite substrate, constituted of a 2D array of dielectrically coated metallic wires embedded in a host ferrite substrate is used for enhancing the bandwidth of a patch antenna. Enhancement is achieved as a result of the increased permeability over permittivity ratio, provided by the wire-ferrite structure by the high permeability of the ferrite material close to its resonance and the low permittivity of the Drude permittivity of the wire medium close to its plasma frequency. By using this substrate, a bandwidth enhancement of about 70% has been achieved with respect to the case of a dielectric substrate of same refractive index.