A printed dual-band coupled-line coupler using modified generalized negative-refractive-index transmission lines

摘要

A dual-band printed metamaterial coupler made of a microstrip line and a generalized negative-refractive index line is presented. Due to the presence of two left-handed bands in the unit cell, backward coupling occurs over two frequency ranges centered on 2.7 GHz and 4.7 GHz. Measured results for an edge-coupled device are reported.