Bragg reflectors based on alternate RHTL-LHTL structures

INTRODUCTION Left-handed materials (LHMs) with negative permittivity and negative permeability, first theo- retically investigated by Veselago (1968), have at- tracted much interest in the past few years (Smith et al., 2000; Pendry, 2000). Such materials were first implemented using a structure which combined pe- riodic arrays of metallic lines and split ring resonators (SRRs) (Shelby et al., 2001). Since then much work has been dedicated to fabricating such materials. These new artif…