Compact ‘V’ shaped metamaterial based resonator for wide band rejection

Abstract

This paper represents a new technique to achieve a wideband rejection between 5.15 GHz to 5.85 GHz using a compact metamaterial structure. Metamaterials are narrowband resonator, which has bandwidth of 3% approx., but under this paper the novelty lies in incorporating a ‘V’ shaped metamaterial structure to achieve a fractional bandwidth of 13.17% within nominal space. Single ‘V’ shaped resonator has been simulated in full wave simulator and substantiated for permeability (μ), permittivity (□) and refractive index (n) values using Matlab code. The order of the resonator is increased upto 4 to achieve better rejection bandwidth and rejection level. The resonator and its complementary have been simulated along with a transmission line. The simulation result shows that the proposed 4th order ‘V’ shaped complementary resonator has better response and provides a wideband rejection from 5.15–5.85 GHz (WLAN Band) below −10dB for a dimension of 9×9 mm2.