Backward Wave Propagation of a Uniaxial Anisotropic -Negative Slab Composed of Metallic Spirals
نویسندگان
چکیده
1. Introduction It has been theoretically shown that backward waves can be supported not only by double-negative materials with simultaneous negative permittivity and permeability [1] but also by uniaxial anisotropic single-negative slabs with a negative component of permittivity or permeability tensor [2]. The uniaxial anisotropic single-negative materials are potentially advantageous in row loss characteristics as well as a simple configuration because only a single kind of the constituents is required compared with double-negative materials of two kinds of constituents, typically split-ring resonators and wires. Although the backward wave support has already been shown, there is little experimental verification so far, as far as the authors know. In this paper, a uniaxial anisotropic slab with a negative component of the permeability tensor is designed at microwave frequency band by using a two-dimensional (2D) periodic array of metal spirals on a dielectric substrate and backward wave propagation characteristics supported by the structure are experimentally investigated.
منابع مشابه
Negative refractive index characteristics of a uniaxial anisotropic μ-negative slab
Negative refractive index characteristics of a uniaxial anisotropic slab with a negative component of the permeability tensor are first confirmed. A two-dimensional array of metallic spirals is fabricated on a dielectric substrate and the wave propagation guided by the structure is measured by near-field measurements at 4.5 GHz band. The ω-β relation is obtained by the measured phase distributi...
متن کاملTE Volume Modes in Anisotropic Single-Negative Slab with Negative Component in Permeability Tensor
Existence of backward TE volume modes which are to be identified as Magnetostatic Wave (MSW) in anisotropic single-negative slab with partly negative permeability tensor component have already been revealed by present authors. In this paper, detailed modal analysis has been carried out for this kind of TE volume modes to find out their novel and peculiar properties. From these numerical results...
متن کاملPlane Wave Propagation Through a Planer Slab
An approximation technique is considered for computing transmission and reflection coefficients for propagation of an elastic pulse through a planar slab of finite width. The propagation of elastic pulse through a planar slab is derived from first principles using straightforward time-dependent method. The paper ends with calculations of enhancement factor for the elastic plane wave and it is s...
متن کاملTorsional Surface Wave Propagation in Anisotropic Layer Sandwiched Between Heterogeneous Half-Space
The present paper studies the possibility of propagation of torsional surface waves in an inhomogeneous anisotropic layer lying between two heterogeneous half-spaces (upper and lower half-space). Both the half-spaces are assumed to be under compressive initial stress. The study reveals that under the assumed conditions, a torsional surface wave propagates in the medium. The dispersion relation ...
متن کاملPLANE WAVE PROPAGATION THROUGH A PLANER SLAB
An approximation technique is considered for computing transmission and reflection coefficients for plane waves propagating through stratified slabs. The propagation of elastic pulse through a planar slab is derived from first principles using straightforward time-dependent method. The paper ends with calculations of enhancement factor for the elastic plane wave and it is shown that it depends ...
متن کامل