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In this paper, a complex-envelope (CE) scheme is introduced into the locally one-dimensional finite-difference time-domain (LOD-FDTD) method for the extraordinary optical transmission (EOT) analysis of periodic metallic gratings. The dispersion of the metal, caused by the evanescent waves propagating along the interface between the metal and dielectric materials in the visible and near infrared regions,...
In this work, the numerical dispersion of the three-dimensional (3-D) finite-difference time-domain (FDTD) method with weighted Laguerre polynomials (WLP) is presented. The phase velocity of numerical wave modes is relevant to the direction of wave propagation, grid discretization and time-scale factor. Additionally, the unconditionally stability for marching-on-in-order WLP-FDTD scheme, with the...
In this paper, an artificial neural network (ANN) model based on data mining techniques is proposed for parametric modeling of antennas. Compared with the traditional ANN, the proposed model with data mining can achieve the trained model with small training datasets and accurate results. The validity and efficiency of the proposed method are confirmed with a U-slot patch antenna.
This paper proposes a model based on a machine learning algorithm, extreme learning machine (ELM), and the pole-residue-based transfer function (TF) for parametric modeling of electromagnetic behavior of microwave components. Compared with the model based on the artificial neural network, the proposed ELM model can obtain the accurate results for microwave passive component design with the small training...
In this paper, the Newmark-Beta algorithm is introduced into the finite-difference time-domain (FDTD) method in dispersion media, resulting in an unconditionally stable method for periodic metallic grating analysis. The proposed method eliminates the Courant–Friedrich–Levy constraint and improves the simulation efficiency for multiscale problems. The dispersion of the metal, which is caused by the...
In this paper, a frequency-dependent locally one-dimensional finite-difference time-domain (LOD-FDTD) method is developed for the extraordinary optical transmission (EOT) analysis of periodic metallic gratings. The dispersion of the metal, caused by the evanescent waves propagating along the interface between the metal and the dielectric materials in the visible and near infrared regions, is expressed...
In this paper, a generalized auxiliary differential equation (ADE) technique is utilized to develop a frequency-dependent locally one-dimensional finite-difference time-domain (LOD-FDTD) method for the extraordinary optical transmission (EOT) analyses of periodic metal gratings. The LOD-FDTD method is an unconditionally stable method which is not restricted by the Courant-Friedrich-Lewy (CFL) stability...
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