Design, fabrication, and testing of double negative metamaterials

TLDR

DNG media have simultaneously negative permittivity and permeability. Effective permittivity and permeability were extracted from normal‑incidence reflection and transmission measurements. The fabricated metamaterials exhibit double‑negative behavior at X‑band frequencies, confirmed by simulation and experimental measurements that match free‑space.

Abstract

The design, fabrication, and testing of several metamaterials that exhibit double negative (DNG) medium properties at X band frequencies are reported. DNG media are materials in which the permittivity and permeability are both negative. Simulation and experimental results are given that demonstrate the realization of DNG metamaterials matched to free-space. The extraction of the effective permittivity and permeability for these metamaterials from reflection and transmission data at normal incidence is treated. It is shown that the metamaterials studied exhibit DNG properties in the frequency range of interest.