Effect of Splits in Resonance Permeability of ESRR Metamaterial at THz.

Left handed materials which have both negative permittivity and permeability, have been the area of potential research over a decade. This paper elucidates a Double Negative Group (DNG) Electric SRR, having 19.13THz as resonant frequency and having FR4 (ɛr=4.4) as substrate material. Nicolson Ross Wier (NRW) method has been used to retrieve the material parameters from transmission and reflection coefficient. Upon incorporation of splits in the structure, we find shift in resonance of permeability to a higher frequency at THz as the no. of splits increase. Also, the curve for resonance in permeability gets sharper i.e. less broadened with increase in splits (upto 3) on ESRR metamaterial. [ABSTRACT FROM AUTHOR]