Improvised absorbing boundary conditions for three-dimensional electromagnetic finite elements

Improvised absorbing boundary conditions for high frequency electromagnetic problems have been studied. This method approximated unbounded space as series of isotropic spherical shells so as to emulate open boundaries without the need for additional code to any finite element solver. Previous work addressed applications of this technique to magnetostatic and electrostatic problems. This present work studies the wide-range frequency dependence of the IABC when applied to three-dimensional electromagnetic radiation problems.