Experimental Study of the Transmission Property of Anisotropic Left-handed Materials

摘要

We study the transmission property of an anisotropic metamaterial slab exhibiting negative permittivity and negative permeability along some specific directions. The wires aligned with the y direction yields a permittivity εy(ω) described by a Drude model, while the axis of the Ω rings is aligned with the x axis, yielding a permeability μz described by the Lorentz model (propagation direction is along the z axis). The resonant and plasma frequencies were retrieved from simulation results. It is discovered from theoretical calculation that the Brewster angle increases as the frequency decreases. A sample of such left-handed material slab is fabricated and experimental results are provided which corroborate the theoretical predictions.