Radiation Boundary Conditions: A New Semi-Analytical Approach

In this paper we have presented a novel semi-analytical approach to derive radiation boundary conditions. The main idea of the work is to apply generalized impedance boundary conditions instead of absorbing ones. The proposed scheme can be easily employed in conjunction with the finite difference or finite element methods to solve electromagnetic scattering and radiation problems. Moreover, it is possible to obtain an analytical solution as an output of the calculation. The accuracy of the developed method was verified by comparing the numerical results with the exact solution for dipole antenna radiation problem. One of the main advantages of the new model is its simplicity, elegance and proven effectiveness.