TITLE:
FDTD Modeling of Lorentzian DNG Metamaterials by Auxiliary Differential Equation Method
AUTHORS:
Chiranjib Goswami, Saptarshi Mukherjee, Subrata Karmakar, Manimala Pal, Rowdra Ghatak
KEYWORDS:
ABC, ADE Method, CPML, DNG, FDTD Method
JOURNAL NAME:
Journal of Electromagnetic Analysis and Applications,
Vol.6 No.5,
April
30,
2014
ABSTRACT: In this
paper, Finite Difference Time Domain (FDTD) is utilized to simulate
metamaterials of Double Negative (DNG) origin that refers to those materials
having simultaneous negative permittivity and permeability. The problem
regarding space formulation is achieved by means of auxiliary differential
equation method (ADE), which is easy, reliable and also causal process in
nature thus making it proficient. It uses fair approximations to explicate the
model. Mur’s boundary condition is used for 1-D problem space and convolution
perfectly matched layer boundary is implemented for 2-D problem space. The
properties of metamaterial conform their speculations of energy absorption,
enhancement and backward propagation property with the aid of graphs engineered
by Matlab simulation both in 1-D and 2-D. Also, the interaction of fields on
DNG and Double Positive (DPS) layers is contrasted. The results achieved
elucidate the validity and effectiveness of the ADE method and the Convolution
Perfectly Match Layer (CPML) in designing DNG metamaterials.