Multiband left-handed metamaterials

A method of realizing multiband left-handed metamaterials (MB-LHMs) was presented. By alternatively stacking arrays of unit cells with different geometrical dimensions, the combined structures exhibit multiple LH passbands. As an example, a typical MB-LHM was designed, fabricated, and investigated numerically and experimentally. Both the simulation and experiment results show that the MB-LHM has three alternatively left- and right-handed passbands, of which two are LH ones. (C) 2009 American Institute of Physics. [DOI:10.1063/1.3170236]