Fine-tuning the Fresnel PO model

The use of Physical Optics (PO) for computations of scattering phenomena has reduced the use of the classical Geometrical Optics (GO-UTD) methods for computations of propagation phenomena in mobile communication systems. However, there is an ever-increasing demand for efficient implementations of PO computations.In this paper, the influence of some of the options and limitations of the computations of EM fields using PO with the Fresnel approximation will be discussed.For finite size, finite permittivity plates, the influence of the internal reflections, the choice of the integration centre and the use of near-field formulas and on accuracy and efficiency will be investigated for both grazing and nearly perpendicular incidence. The simulations will be compared with near-field measurements.The use of Physical Optics (PO) for computations of scattering phenomena has reduced the use of the classical Geometrical Optics (GO-UTD) methods for computations of propagation phenomena in mobile communication systems. However, there is an ever-increasing demand for efficient implementations of PO computations.In this paper, the influence of some of the options and limitations of the computations of EM fields using PO with the Fresnel approximation will be discussed.For finite size, finite permittivity plates, the influence of the internal reflections, the choice of the integration centre and the use of near-field formulas and on accuracy and efficiency will be investigated for both grazing and nearly perpendicular incidence. The simulations will be compared with near-field measurements.C