Plenary lecture I: metamaterial antennas and finlines using full wave analysis

Metamaterials are been recently very used at telecommunications structures, and are defined as artificial effectively non-homogeneous electromagnetic materials with desired bi anisotropic dielectric and magnetic characteristics. In this paper the bilateral fin line and planar antennas with EBG - Electromagnetic Band Gapmetamaterial substrate is analyzed using the TTL - Transverse Transmission Line, concise full wave method. Fin lines are widely used as a millimeter wave component due to its various advantages such as reduced size, weight, and low cost and in addition because it interfaces easily with other millimeter wave circuits. This letter demonstrates an application of the EBG metamaterial: an efficient bilateral fin line and microstrip antennas. the analysis is made using the TTL method and the metamaterial substrates. This objective of this presentation is to show the effect of dielectric anisotropy on bilateral finlines shown in Fig. 1 and antennas. the paper discusses the effect of anisotropy, on effective dielectric constants, attenuation constant and the pattern E and H fields by applying the anisotropy one by one in all three directions. the EBG medium can not be characterized by assigning a single permittivity and permeability value for throughout the finite structure. In other words, the parameters depend on the spatial coordinates and this causes spatial dispersion. As a result of this, the medium will not be homogenous. for a nonhomogeneous structure, the incident wave undergoes a process of multiple scattering. the substrate shown in region 2 of Fig.1 is modeled by utilizing bianisotropic tensor properties, which are expressed as: the effective dielectric constant, the attenuation constant, and the pattern E and H fields are obtained. Comparison with the literature is presented. the new results obtained in 3D for these applications are presented at first time.