Full-wave analysis of a nonradiative dielectric waveguide with a pseudochiral Ω-slab

Abstract

The use of -negative materials with a plasma-like scalar permittivity allows us to achieve this goal, by working in the frequency range where the relative permittivity is lower than one in absolute value, and by adopting suitably low values for the slab width and for the metal-plate spacing. Parametric studies have been presented that illustrate the required thicknesses of the metamaterial layer at different frequencies and the attainable FBW of unimodal propagation.Although encouraging, the results of the present investigation are based on a rather idealized metamaterial model that disregards its actual implementation. Realistic approximations of -negative metamaterials based, e.g., on arrays of wires embedded in a host dielectric require that anisotropy and also spatial dispersion be taken into account in a homogenized equivalent model [13]. A study based on such more refined models and on full-wave simulations of actual metamaterial structures will be the subject of future work.

Slow wave propagation in nonradiative dielectric waveguides with bianisotropic split ring resonator metamaterials

“…With the boom of artificially structured materials, modified NRD waveguides with complex materials have recently garnered considerable attention for their peculiar electromagnetic properties [6][7][8][9][10]. Nonreciprocal effects arising from the use of transversely magnetized ferrite slabs have been reported for both surface and leaky modes [6].…”

Electromagnetic Wave Propagation in Chiral H-Guides

“…Several examples of H-guides, involving other types of complex media, have been already published in the literature, namely, the cases when the isotropic slab is replaced by a uniaxial crystal [15], a transversely magnetized ferrite [16], an omega medium [17] or a doublenegative metamaterial [18]. However, so far, no analysis has been published for the chiral H-guide.…”

Electromagnetic Wave Propagation in Omega Waveguides: Discrete Complex Modes and Application to a Ridge Waveguide

“…New results have been presented in the literature concerning the analysis of reflection and transmission properties of planar arrays of omega particles [3] and planar structures of uniaxial chiro-omega slabs [4,5], radiation of elementary sources embedded in omega media [6], extraction of constitutive parameters of omega materials [7,8], wave propagation in closed parallel plate [9], circular [10] and rectangular waveguides partially [11,12] or totally filled [13] with omega media and in a NRD waveguide with an omega slab [14].…”