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A simple but efficient finite-difference time-domain (FDTD) method integrated with auxiliary differential equation (ADE) for modelling periodic graphene-based structures is proposed. Based on the integral form of Ampere's circuital law, the derived equations are simpler than those of subcell method proposed by the others. Numerical experiments are carried out to validate our method in comparison with...
A ray-tracing based FDTD Meshing algorithm, combined with SIMD technique is propose for FDTD simulation of aircraft platform in this paper. During the implementation of such technique, the original ray-tracing formulation is changed into the vector operation form. The proposed algorithm is then applied for constructing the FDTD mesh for an aircraft model. It is shown that such new SIMD can achieve...
A simple and efficient auxiliary-difference-equation finite-difference time-domain (ADE-FDTD) method for modelling graphene-based structures is presented in this paper. By considering the graphene sheet as a polarization current source characterized by an auxiliary equation (AE), the proposed method can be easily adopted to simulate graphene-based structures biased by electrostatic or magnetostatic...
A hybrid FDTD method based on conformal FDTD is proposed. Both PEC and dielectric conformal schemes are applied for the same calculation area, with one low-cost coefficient modifying technique introduced for suppressing numerical dispersion error with very high accuracy achieved. Such hybrid FDTD method is applied for dealing with electromagnetic scattering problems of wedges composed of PEC and dielectric...
An optimized conformal finite-difference time-domain (FDTD) (2, 4) method is proposed for calculating reflected, diffracted, and total fields of two- and three-dimensional (2- and 3-D) perfectly conducting (PEC) wedges with an electromagnetic pulse (EMP) incidence, where one low-cost coefficient-modification (CM) technique is implemented for effectively reducing its numerical dispersion error. For...
One enhanced conformal FDTD method is proposed for characterizing transient responses of arbitrary PEC wedges illuminated by an electromagnetic pulse (EMP), and one low-cost modified technique is introduced for effectively suppressing numerical dispersion error with much high accuracy achieved. Excellent agreement is also obtained between our captured diffraction field of the wedge and that of uniform...
A generalized recursive convolution (RC) FDTD method integrated with subcell technique is proposed for studying on transmission and reflection characteristics of cross-shape graphene frequency selective surface (GFSS) which is biased by an electrostatic field. This improved method is very flexible for efficiently modelling single and even multi-layer dispersive “thin” nano layers together with other...
In this paper, we give a description of a software package LSLEP (lightning-caused surge level evaluation program). LSLEP can be used to evaluate the surges transferred from the power line into the house from a statistical perspective. The package mainly has three parts: 1) fast time-domain calculation of the lightning-caused electromagnetic field; 2) FDTD simulation of the whole low-voltage power...
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