Compact dielectric version of a uniaxal magnetic slab: Compression via transformation optics
Canto, João R.
Compact dielectric version of a uniaxal magnetic slab: Compression via transformation optics, Proc Conf. on Telecommunications - ConfTele, Castelo Branco, Portugal, Vol. -, pp. - - -, May, 2013.
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Transformation optics provides a new tool for designing electromagnetic devices using metamaterials. This theory establishes a correspondence between material changes and geometric deformations. In general, heterogeneous metamaterials with extreme anisotropic parameters are required to represent such geometric deformations. Nonetheless, simpler geometric transformations can be represented by simpler material changes, and therefore, require less complex metamaterials. Recently, a uniform compression along an axis was proposed as a method to reduce the profile of conventional devices using homogenous uniaxial metamaterials. Nevertheless, these metamaterials are still complex to implement as they have simultaneously electric and magnetic anisotropies. In this work it is shown that if one applies this transformation to a uniaxial magnetic anisotropic material, instead of a conventional isotropic material, the resulting medium is a uniaxial dielectric crystal. To demonstrate the concept, this compression is herein applied to a grounded slabguide containing a uniaxial magnetic medium, and the resulting structure is then devised using a simple dielectric uniaxial crystal.