A new heuristic UTD diffraction coefficient for prediction of radio wave propagation

In this paper, a new heuristic diffraction coefficient is proposed for dielectric wedges with losses. The suggested diffraction coefficient is based on the uniform theory of diffraction (UTD) and is compared to Luebbers´, Holm´s and the rigorous diffraction coefficient (RDC). Parallel and perpendicular field polarizations are tested. The new heuristic diffraction coefficient shows clear accuracy improvement over Luebbers´ and Holm´s coefficients when compared to the RDC. Moreover, the proposed diffraction coefficient is as simple to compute as Luebbers´ and Holm´s coefficients.