This aim of this paper is to investigate the specific absorption rate (SAR) distribution in a human head by using the finite-difference time-domain (FDTD) calculations, due to exposure to EMF radiation from a mobile phone at frequencies 900 MHz Mobile Phone model with a λ/2 monopole antenna and a hand head phone model dimensions are 100 mm x 50 mm x 20 mm. The head model used is a sphere with a...

The Dirac equation is solved using three-dimensional Finite DifferenceTime Domain (FDTD) method. Zitterbewegung and the dynamics of a well-localized electron are used as examples of FDTD application to the case of free electrons. PACS numbers: 03.65.Pm, 02.60.-x, 02.60.Lj § Correspondence should be addressed to Louisiana Tech University, PO Box 10348, Ruston, LA 71272, Tel: +1.318.257.3591, Fax...

Ground penetrating radar (GPR) forward modeling is one of the core geophysical research topics and also primary task simulating ground system. It a process propagation laws characteristics electromagnetic waves in simulated space when distribution internal parameters exploration region known. And finite-difference-time-domain (FDTD) method has space-time transient evolution wave, whose numerica...

The computer simulation of electromagnetic (EM) wave propagation in time domain plays an important role of development of wireless communications. Higher frequency is required for high data-rate communication; it makes the simulation large scale computation. Up to now, the FDTD method have been widely used for the computer simulation[1]. Recently, another method, the constrained interpolation p...

The ionosphere plays a role in radio propagation that varies strongly with frequency. At extremely low frequency (ELF: 3–3000 Hz) and very low frequency (VLF: 3–30 kHz), the ground and the ionosphere are good electrical conductors and form a spherical Earth-ionosphere waveguide. Many giants of the electromagnetics community studied ELF-VLF propagation in the Earth-ionosphere waveguide, a topic ...

To enhance the flexibility of the parallel FDTD for the analysis of the bio-electromagnetic problems, a universal and efficient interpolation technique based on the super-absorbing boundary principle is presented, which can improve the interpolation accuracy and ensure the stability of the parallel FDTD iterative procedure. Using this technique, we calculate the SAR (Specific Absorption Rate) v...

We present a multiphysics numerical technique for the characterization of high-frequency carrier dynamics in high-conductivity materials. The technique combines the ensemble Monte Carlo (EMC) simulation of carrier transport with the finite-difference time-domain (FDTD) solver of Maxwell’s curl equations and the molecular dynamics (MD) technique for short-range Coulomb interactions (electron-ele...

In this research, we modeled a silicon-based photodetector for the NIR-IR spectrum using grating structure fabricated metal-assisted chemical etching method. A nanostructure by method is free of defects such as unwanted sidewall metal depositions. The device simulated Lumerical finite difference time domain (FDTD) optical characteristics and CHARGE electrical characteristics. First, optimized d...

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...