Comparison Between Geometrical Shapes for New Designsof Split Ring Resonators

Abstract

In electromagnetics, the material’s characteristics can be defined by the permetivity, permebilty, and conductivity of different range of frequencies, where the refractive indix and the impedance can be extracted. In this work, the properties of artificial metameterials have been studied by designing a unit cell of three dimensional lattice vectors using CST (Computer Simulation Technology). A simulation processes have been employed to obtain the S- paremeters, the magnetic resonance frequensy of several Split Ring Resonator srr was investigated. Also, the work has introduced four new designs of srr, circle-square (c- sq), circle-square- circle resonator (c- sq-c), square- circle resonator (sq- c) and square-circle-square resonator (sq-c-sq). Conventional srr structures faced challenges operating effectively at higher frequencies due to production difficulties. Scaling down the structure results in narrow split and gap regions potentially leading to contact issues between metallic regions. Traditional srr structures were limited to operating within a few gigahertz frequensy ranges. srr structures exhibited electrical resonance for different polarizations and propagation directions. The new design showed a positive response within the (7- 12) GHz range with the nagative refracted indix ranging from (-4.35 ˗ -5.6).