Application of Finite Difference Time Domain (FDTD) Technique to Study of Transverse Magnetic Wave Propagation in Two Dimensions System

الملخص

In this paper, Finite difference time domain technique was applied to find the solutions of Maxwell’s curl equations numerically. We calculated the Transverse magnetic (TMz) wave propagation in twodimensional (2-D) system in order to describe the propagations of the electric and magnetic waves for the example in Y-branch shape and also structure consists of two elements, each element is constructed as two parallel strips. The results of simulations can describe that the waves propagated and also controlled in a computational domain in 2-D. It was found that the distributions of the TMz wave can be changed when excited in different phases. The sources of excitations set in the phase and out of phase in two elements to make a comparison between the simulations. Instead of using a metal material such as a copper, we used the perfect electric conductors (PECs) to construct the strips. Therefore, the simulations results indicated that very good distributions were obtained and the waves of propagation controlled between the PECs strips as the electric field component must be set to equal zeros at boundaries in the PECs regions during the calculations. Moreover, this numerical study has demonstrated that the signals appeared identical, equally divided between the elements and propagated in the same phase and amplitude into the upper and lower elements in the Y-branch. The results have proved that the intensities of the TMz field components can be changed when varied the phases in the calculations.