Caracterização da atenuação de sinais de rádio frequência por diferentes materiais empregados em alvenaria

Abstract

In recent years, technological development and advances in studies of communication systems based on radio-frequency (RF) have fostered research, with emphasis on the expression of RF signals in the indoor environment. However, there is still an unfilled space with regard to research on the influence of building materials on the influence performance of these radio signals. This work aims to study the behavior of RF signals when they reach obstacles of building elements based on ceramic and plaster blocks, and experimentally determine the attenuation caused by these materials, which are usually used in the civil construction scenario. A measurement setup is studied in this work and samples of these materials were maintained at RF signals in the frequency range between 700 MHz and 2500 MHz. 03 samples of each type of material were observed and the measured results for signal attenuation were statistically treated and compared. The results indicate that the attenuation of the RF signal depends on the type of material used, therefore, it is necessary to develop studies in an attempt to test other materials that meet the requirements of civil construction and minimize the loss of control of these signals in the internal environment. Among the samples of waste materials, verify that the plasterboards for walls are the ones that have the highest average signal attenuation at each specific frequency. This can be explained both by the composition of the material and by the physical structure, as the plaster blocks for walls have a solid thickness without leaks.