SYNTHESIS OF ABSORBING BOUNDARY-CONDITIONS FOR THE FDTD METHOD - NUMERICAL RESULTS

The communication presents numerical results in the form of a comparis on of predictions due to a numerical algorithm using a previously publ ished exact nonlocal Absorbing Boundary Condition (ABC) and analytical results for the field radiated by an infinitely small dipole. The num erical approximations are derived, and application to the FDTD method is straightforward. The method is compared to a related approach due t o De Moerlose et al., and it is shown that the method yields better ac curacy since higher order interpolation and numerical integration sche mes may be used with this formulation.