Diamond-shaped hole array in double-layer metal sheets for negative index of refraction
Yilmaz, A. and Sabah, C.
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Abstract
In this paper, a new design of hole array in a double-layer periodic
arrangement is introduced and investigated both numerically and
experimentally for the negative index of refraction. The structure shows
similar behavior to that of the corresponding fishnet metamaterials. The
effective constitutive parameters are revealed by using retrieval
procedure to verify the negative refraction nature of the proposed
structure. A relatively high figure of merit (FOM=Re(n)/Im(n)=70.05) is
achieved at the K-band (1826.5) frequency region.... Show more Show less