Extended discussion of “Metamaterial composed of different cells exhibiting a negative refraction property over multiple frequency bands”

Abstract

Herein, an extended discussion of the paper published in Journal of Modern Optics, whose title is “Metamaterial composed of different cells exhibiting a negative refraction property over multiple frequency bands”, is performed. In order to realize the multiple negative passbands, different cells are chosen to stack in the x and y axes to form a two-layer or a three-layer metamaterial unit. Different multiple passbands are obtained by comparing with these units coupling cells in different directions.