Title :
Existence of complex modes in gratings composed of left-handed materials
Author :
Vahidpour, M. ; Shahabadi, M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Tehran Univ., Iran
Abstract :
A grating composed of successive layers of left-handed (LH) and right-handed (RH) materials is investigated. It is shown that, in this structure, unlike gratings of purely RH materials, there exist pairs of complex modes without which a complete modal analysis is not possible. Complex propagation constants of these modes are determined by solving an analytical characteristic equation.
Keywords :
dielectric materials; electromagnetic wave propagation; inhomogeneous media; metamaterials; modal analysis; periodic structures; complex modes; complex propagation constants; gratings; left-handed materials; modal analysis; periodic structures; right-handed materials; Equations; Gratings; Metamaterials; Modal analysis; Optical signal processing; Periodic structures; Permeability; Permittivity; Propagation constant; Slabs;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2005 IEEE
Print_ISBN :
0-7803-8883-6
DOI :
10.1109/APS.2005.1552224
