Scattering from multi-layered metamaterials using wave matrices
Morgan, Michael A.
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The complex permittivity ( )Ì and permeability ( Ã¦) of a material determine the response of the material to electromagnetic radiation. Usually, the real parts of Ì and Ã¦ are positive for naturally occurring materials at microwave frequencies. Metamaterials are engineered media that are designed to have either a negative permittivity or permeability or both. Negative permeability and negative permittivity would cause electromagnetic waves traveling through this medium to exhibit unusual characteristics such as power flow in a direction opposite to the phase velocity. In this thesis, the wave matrix approach is used to calculate the total reflection and transmission coefficients of a multilayered structure. The method is applicable to all types of materials, including metamaterials. Several layered configurations are studied including both metamaterial and conventional dielectric layers. A MATLAB program is developed to examine the effects of frequency, angle of incidence and polarization. The results are compared to published data. Potential applications of metamaterials are also discussed.
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Feng, Bo-Kai (Monterey California. Naval Postgraduate School, 2006-09);In the frequency domain all materials can be described electrically by their complex permittivity and permeability. These constitutive parameters determine the response of the material to electromagnetic (EM) radiation. ...
Doumenis, Christos (Monterey, California. Naval Postgraduate School, 2011-12);The complex permittivity (?) and permeability (?) of a material determines the response of the material to electromagnetic radiation. In many cases, the real part of ? and ? are both positive for materials that can be found ...
Ting, Choon Boon (Monterey, California. Naval Postgraduate School, 2012-09);Materials are generally classified in terms of their constitutive parameters, the complex permittivity and permeability , in the frequency domain. These parameters are used to determine the response of materials to ...