Synthesis of absorbing boundary conditions for the FDTD method: numerical results

Presents numerical results in the form of a comparison of predictions due to a numerical algorithm using a previously published exact nonlocal absorbing boundary condition (ABC) and analytical results for the field radiated by an infinitely small dipole. The numerical approximations are derived, and application to the FDTD method is straightforward. The method is compared to a related approach due to De Moerlose et al., (see ibid., vol.41, no.7, p. 890-896, 1993) and it is shown that the method yields better accuracy since higher order interpolation and numerical integration schemes may be used with this formulation