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Guiding and Radiating Structures based on Volumetric Single-negative Metamaterials

Recently, many interesting applications of volumetric double negative (DNG) metamaterials in antenna technology and microwave engineering have been proposed. The basic phenomenon used in construction of these new devices is the backward-wave propagation. Unfortunately, the DNG metamaterials comprise two different types of inclusions, which makes the manufacturing process rather complicated, time consuming and expensive. On the other hand it has been shown recently that much simpler anisotropic Single-Negative (SNG) metamaterials also support backward-wave propagation, which can be used for development of different types of subwavelength guiding structures and antennas. It is very interesting that some of these structures may be also used as Epsilon-Near-Zero (ENZ) metamaterials, which can be used for construction of plasma-like, ultra-refraction-based antennas. In this talk, both the theoretical basis of subwavelength guiding and radiation of electromagnetic energy using the SNG and ENZ metamaterials, as well as the experimental results achieved so far at University of Zagreb will be reviewed.

single-negative metamaterial; anisotropy; MNG; ENG

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