tion of lattice cell to the averaged impinging electric field density Eave.

This advantage makes the FDTD especially wellsuited for most EMI/EMC problems in which a wide frequency range is intrinsic to the simulation. Trivial materials are covered by the standard Yee-algorithm and described. The time-domain solution, represented as a temporal waveform, can then be decomposed into its spectral components using Fourier Transform techniques. This implies that one single simulation results in a solution that gives the response of the system to a wide range of frequencies. As mentioned before, the E and H field components are all located at different positions within the Yee cell. However, the distinct feature of the FDTD method, in comparison to the Method of Moments (MoM) and the Finite Elements Method (FEM) (see Chapters 4 and 5) is that it is a time-domain technique. The simulation geometry is discretized into Yee cells which, as mentioned previously, are the fundamental unit cell of the FDTD method. The FDTD technique is one of the most widely used methods for interpreting high-resolution problems such as those associated with the human body. Each cell has three associated electric and magnetic eld compo-nents, while the other eld components be-long to adjacent cells. In this paper, a modified finite-difference time-domain (FDTD) method is proposed for the rapid analysis of a Hertzian dipole source in the low-frequency band. By lling up the problem space with these cells,weobtaina3Dmesh,whereneighbouring cells share edges and faces.

Furthermore, since the FDTD is a volume-based method, it is exceptionally effective in modeling complex structures and media. faces, are called Yee-cells and are the funda-mental elements of most FDTD methods 2. Its primary appeal is its remarkable simplicity. During the past decade, the FDTD method has gained prominence amongst numerical techniques used in electromagnetic analysis. The Finite-Difference Time-Domain (FDTD) method provides a direct integration of Maxwell’s time-dependent equations.

Fdtd yee cell