Finite-element analysis of complex axisymmetric radiating structures

Perfectly matched layer for the time domain finite element method

“…We set t 1 ¼ ðn À 1ÞDt and use either exact or trapezoidal integration with respect to t in Eq. (16). Exact integration gives 1 Dt þ e ÀbDt f nÀ1 j ðrÞ: ð20Þ…”

“…The anisotropic material formulation of the PML suits the FEM well and it has mainly been used for computations in the frequency domain [13][14][15][16]. Tsai et al [17] presented a time domain FEM scheme based on a modified anisotropic material, where the frequency dependence of the PML is approximated in an intuitive way.…”

Nystrom method analysis of three-dimensional rotationally symmetric reflectors and lenses

“…In addition, important role is played MGF and its derivatives, because their calculation takes almost all time in BOR method. In [11][12][13][14][15][16][17][18], authors present several ways to calculate MGF. Each of presented methods has advantages for some domain of MGF parameters and disadvantages for parameters from other domains.…”

Analysis of radome at millimeter wavelengths

“…HF methods assume locally planar surfaces, so these methods are suitable for the radome surface, which is large, smooth and has electrically large radius curvature, but cannot be employed for the analysis of sharp radome tip as local flat surface assumption is not satisfied in this case. The other category is full-wave methods such as the method of method (MoM) [2][5] and the finite-element method (FEM) [4]. The full-wave methods provide much higher solution accuracy compared to that by the BY methods.…”