An In Situ Characterization of 1.7 GHz Building Entry Loss

In this manuscript, we assess the suitability of the ITU Recommendation P.2109 building entry loss models through continuous-wave and broadband measurements conducted in two distinct buildings: a historical structure and a recently constructed modern building. The findings reveal that both the construction material type and the density of materials significantly influence the entry loss. Moreover, our results indicate that the P.2109 categories of “traditional” and “thermally efficient” might not adequately describe the intricacies of building construction, leading to challenges in accurately inferring propagation loss values.