Title :
A Wideband ADI-FDTD Algorithm for the Design of Double Negative Metamaterial-BasedWaveguides and Antenna Substrates
Author :
Kantartzis, Nikolaos V. ; Sounas, Dimitrios L. ; Antonopoulos, Christos S. ; Tsiboukis, Theodoros D.
Author_Institution :
Dept. of Electr. & Comput. Eng., Aristotle Univ. of Thessaloniki
Abstract :
The accurate modeling of composite double negative metamaterials tailored for enhanced waveguide and antenna structures, is presented in this paper via a novel 3-D ADI-FDTD method. Developing a set of multi-directional operators for the discretization of such complex media, the unconditionally stable technique leads to broadband solutions and minimizes dispersion errors as time-step exceeds the Courant criterion. Hence, efficient microwave devices, loaded by periodic substrates of thin wires and split-ring resonators, can be optimally designed without the need of lengthy simulations
Keywords :
broadband antennas; composite materials; finite difference time-domain analysis; metamaterials; waveguide antennas; Courant criterion; antenna substrates; complex media discretization; composite metamaterials; dispersion error minimization; double negative metamaterial-based waveguides; microwave devices; multidirectional operators; split-ring resonators; wideband alternating-direction implicit-FDTD algorithm; Algorithm design and analysis; Broadband antennas; Finite difference methods; Frequency; Magnetic flux; Polarization; Scattering parameters; Time domain analysis; Wideband; Wires;
Conference_Titel :
Electromagnetic Field Computation, 2006 12th Biennial IEEE Conference on
Conference_Location :
Miami, FL
Print_ISBN :
1-4244-0320-0
DOI :
10.1109/CEFC-06.2006.1632824
