Abstract

In this paper, a concept of multiple-band is proposed to broaden the bandwidth of the negative index metamaterials. The multiple-band, which is realized by a new metamaterial sample composed of the double-E-ring, has more than two negative refraction bands at comparable frequencies. When the metamaterial produces a multiple-band, the bandwidth can be greatly enhanced, yielding an increased numbers of negative bands. The experimental measurements and computer simulations for the multiple-negative-passband metamaterial at microwave frequencies are presented. The effective permittivity and permeability of several resonant frequencies are retrieved from the simulation scattering data, and the experimental measurements show good agreement with the simulative results.

© 2016 Optical Society of America

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