Title :
Application of an extended spectral FDTD method for the analysis of periodic structures with lumped elements
Author :
Ge, Yuehe ; Weily, Andrew ; Esselle, Karu P.
Author_Institution :
Dept. of Electron., Macquarie Univ., Sydney, NSW, Australia
Abstract :
In this paper, a novel FDTD method is presented for calculating the dispersion diagram of periodic structures that include lumped passive circuit elements. By combining the FDTD method with periodic boundary conditions (PBCs) and the uniaxial perfect matched layer (UPML), the analysis of periodic structures is reduced to that of a unit cell. The usefulness of the method is demonstrated through the analysis of a negative refractive index material based on a structure that combines lumped and distributed transmission line elements. Numerical results verify the validity of the method.
Keywords :
dispersion relations; finite difference time-domain analysis; lumped parameter networks; network analysis; passive networks; periodic structures; refractive index; transmission lines; FDTD method; PBC; UPML; dispersion diagram; distributed transmission line elements; finite difference time domain method; lumped elements; lumped passive circuit elements; negative refractive index material; periodic boundary conditions; periodic structure analysis; uniaxial perfect matched layer; Algorithm design and analysis; Boundary conditions; Finite difference methods; Lattices; Magnetic analysis; Maxwell equations; Metamaterials; Passive circuits; Periodic structures; Time domain analysis;
Conference_Titel :
Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings
Print_ISBN :
0-7803-9433-X
DOI :
10.1109/APMC.2005.1606721
