Complementary split ring resonators using square Sierpinski fractal curves

Abstract

Split ring resonators and complementary split ring resonators are used in a left-handed media to obtain negative values of permeability and permittivity, respectively. In this paper, novel split ring geometry using square Sierpinski fractal curves is proposed, that reduces resonant frequency of the structure and achieves improved frequency selectivity in the upper transition band. In order to validate the results, left-handed microstrip line that uses square Sierpinski complementary split ring resonators is designed, fabricated and measured.