In this paper, MATLAB based computational approaches for the design and analysis of time-varying capacitors using finite-difference time-domain (FDTD) technique Simulink environment are presented. The FDTD formulation multiple lumped loaded in series on a transmission line is discussed extended to include time variation capacitance. methodology same also MATLAB's RF Blockset Library. dev...

A hybrid transfer-matrix finite-difference time-domain (FDTD) method is proposed for modeling the optical properties of finite-width planar periodic structures. This method can also be applied for calculation of the photonic bands in infinite photonic crystals. We describe the procedure of evaluating the transfer-matrix elements by a special numerical FDTD simulation. The accuracy of the new me...

Abstract This is a tutorial paper on the basics and applications of finite-difference time-domain (FDTD) method. Two types discretization linear governing equations, scalar-type FDTD method vector-type one, are first discussed. Then basic concept compact explicit-FDTD (CE-FDTD) described. By considering relationship between cutoff frequency computer resources, it shown that interpolated wide ba...

This paper presents an approach to modeling of field penetration and gives contribution to understanding the real effects of the fields and the sensitivity of human model to electromagnetic radiation generated by mobile antenna. When a human body is exposed to the electromagnetic radiation, because human body contain 70% of liquid, and it contain more liquid near of head, heart, abdomen (near o...

We present a three-dimensional finite difference time domain (FDTD) method on graphics processing unit (GPU) for plasmonics applications. For the simulation of plasmonics devices, the Lorentz-Drude (LD) dispersive model is incorporated into Maxwell equations, while the auxiliary differential equation (ADE) technique is applied to the LD model. Our numerical experiments based on typical domain s...

This paper presents time-transient polarimetric analysis for a simplified bridge model on water Surface. We extend our previous 2D time-transient analysis to 3D polarimetric scattering problem. Here the Finite-Difference Time-Domain (FDTD) method is utilized. In addition to the time-transient feature, we focus on the generating mechanism of the volume scattering component with increase of the s...

This paper presents an unconditionally stable leapfrog alternating-direction-implicit finite-difference time-domain (ADIFDTD) method for lossy media. Conductivity terms of lossy media are incorporated into the leapfrog ADI-FDTD method in an analogous manner as the conventional explicit FDTD method since the leapfrog ADI-FDTD method is a perturbation of the conventional explicit FDTD method. Imp...

Abstract: We consider the anisotropic uniaxial formulation of the perfectly matched layer model (UPML). We prove the decay of different energies for the UPML, under certain assumptions, to demonstrate the well-posedness of this formulation. We present and analyze a mixed finite element method for the time domain discretization of the UPML to simulate wave propagation in unbounded domains in two...

The recently developed Lorentz Oscillator Model-inspired Finite-Difference Time-Domain (O-FDTD) is one of the simplest FDTD models ever proposed, using a single field equation for electric propagation. We demonstrate its versatility on various scales and benchmark simulation performance against theory, conventional simulations, experimental observations. model’s broad applicability demonstrated...