A basic example of a parallel plate capacitor is charged in two ways within XF7: by a current source and by static voltages placed on each plate. The resulting electric fields from each case are compared.
This example demonstrates the ability of XFdtd to simulate dielectric materials with off-diagonal terms in the permittivity tensor. The case in point here is the computation of bistatic radar cross section from an anisotropic sphere excited by a plane wave.
Since XFdtd includes frequency-dependent dielectric and magnetic materials, it is capable of making three-dimensional calculations for double negative materials, also called negative index materials and metamaterials.
The Rotman Lens Designer (RLD) software output is compared to full wave results from XFdtd for a single lens design realized using different thicknesses of the same dielectric material to determine best design practices.
The performance impact of the sidewall curvature of a Rotman Lens design is evaluated by comparison of several designs created in Rotman Lens Designer (RLD) with full-wave results simulated by XFdtd.
The Rotman Lens Designer (RLD) software output is compared to full wave results from XFdtd for a broad range of design frequencies to validate the performance of the software in different bands of operation.
This example serves as a validation exercise for the XFdtd computations of SAR and impedance and was originally performed by Ericsson Radio Systems personnel in the late 1990’s using a much earlier version of the software.
