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17 compares the scattered [E.sub.x]-field calculated by using the [nu]FDTD/Asymptotic method, with those obtained by using the CFDTD algorithm with a mesh size of [lambda]/160, and with the commercial MoM code results.
19 compares the backscattered [E.sub.z]-field calculated by using the [nu]FDTD with those obtained from: (i) the CFDTD with a mesh size of [lambda]/20; (ii) a commercial MoM code; and (iii) a commercial FEM.
21 plots the scattered field at a frequency of 10 GHz along the specular direction, obtained by using the [nu]FDTD, and compares it with those obtained by using the CFDTD with a mesh size of [lambda]/50; with a commercial MoM code; and, with a commercial FEM code.
Figure 23 compares the backscattered [E.sub.z]-fields calculated by using the [nu]FDTD with those obtained from the CFDTD with a mesh size of [lambda]/20; with a commercial MoM code; and, with a commercial FEM code.
While modeling dielectric objects using the CFDTD approach, the medium parameters in the partially-filled cells are replaced by an average dielectric constant over the entire volume of the cell.
26, which shows the comparison of the phase variation against the thickness, generated by using the infinite slab analytical expression; the CFDTD; and a commercial FEM code.
In this article, we have introduced the [nu]FDTD solver, which is a blend of time and frequency domain techniques designed to generate accurate electromagnetic responses at low frequencies; deal with non-Cartesian geometries accurately without any instability issues that are often encountered in the conventional CFDTD; and, handle lossy/lossless thin structures with ease.
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