Title :
Rational design of double-negative metamaterials consisting of 3D arrays of two different non-metallic spheres arranged on a simple tetragonal lattice
Author :
Li, Yang ; Bowler, Nicola
Author_Institution :
Dept. of Electr. & Comput. Eng., Iowa State Univ., Ames, IA, USA
Abstract :
Non-metallic, low-loss double-negative (DNG) metamaterials can be formed by three-dimensional (3D) arrays of two different non-metallic spheres arranged on a simple tetragonal lattice. Such DNG metamaterials have recently been found to provide DNG bandwidths of 10% through 3D arrays of two different dielectric spheres, and of 18% through 3D arrays of dielectric and magnetic spheres. However, a method of rational design of these DNG metamaterials has not yet been presented. This paper develops a design procedure based on the theoretical description of traveling waves supported by the 3D arrays. Analytical calculations of k-β (dispersion) diagram and effective constitutive parameters of several DNG metamaterials designed using this rule are presented.
Keywords :
dielectric materials; magnetic materials; metamaterials; shapes (structures); 3D array; double-negative metamaterial; k-β diagram; nonmetallic dielectric sphere; nonmetallic magnetic sphere; rational design; tetragonal lattice; traveling wave; Bandwidth; Magnetic materials; Magnetic resonance; Metamaterials; Permeability; Permittivity; Three dimensional displays;
Conference_Titel :
Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on
Conference_Location :
Spokane, WA
Print_ISBN :
978-1-4244-9562-7
DOI :
10.1109/APS.2011.5996578
