Azevedo, Joaquim AmândioSantos, Filipe EdgarSousa, Tony AndresAgrela, Jenny Manuela2019-10-222019-10-222015Azevedo, J. A., Sousa, T. A., Santos, F. E., & Agrela, J. M. (2015). Impact of the antenna directivity on path loss for different propagation environments. IET Microwaves, Antennas & Propagation, 9(13), 1392–1398. doi:10.1049/iet-map.2015.0194http://hdl.handle.net/10400.13/2572Log-normal is a very common propagation model used to estimate the path loss introduced by a given environment. However, in most cases the parameters of the model are antenna specific. In this work, it is shown that the path loss exponent is highly dependent on the antenna pair used in the communication system. Large errors are introduced in the prediction of the path loss if the antennas are different from those used to obtain the parameters of the propagation model. An improved model is developed for the 2.4 GHz industrial, scientific and medical band to estimate the path loss exponent for different antenna directivities knowing the path loss exponent of a reference antenna. The model uses the antenna beamwidth and the antenna gain to obtain a parameter related to the path loss.engRadiowave propagationSingle antennasRadio links and equipment.Faculdade de Ciências Exatas e da Engenhariajournal article10.1049/iet-map.2015.0194