Comparison of free space, perfect ground and fresnel's equation models to determine electric field radiated by a base station antenna

The paper deals with the comparison of three different models for the assessment of the electric field radiated by a base station antenna system, thus featuring the Free Space Model (FS), Perfect Ground Model (PG) and Fresnel Reflection Coefficient Model (RC). The results obtained with mentioned approaches are compared to the results computed via Numerical Electromagnetics Code (NEC). Several variables have been varied to examine the accuracy of each calculation model. The calculations have been undertaken for the far field only. As many European countries performs the field estimation using the FS model, the final goal of this work is to come up with the most convenient model for the field calculation.