Determinación de un modelo de propagación empírico para establecer las pérdidas de propagación en una cámara anecoica.

Abstract

In the current research, an empirical propagation model was determined in order to establish the propagation losses from 10 GHz to 20 GHz in an anechoic chamber. For this determination, an anechoic chamber of 0.8x0.8x2.40 m dimensions was designed, simulated and built, which was internally coated with polyurethane foam. Within the aforementioned chamber, power measurements were made to calculate losses in the communication link. These measurements were made through an ANRITSU MG3692C signal generator, an ANRITSU MS2724C spectrum analyzer and two cornet antennas. These measurements were made by varying the distance from 0.15 to 2.40 m and frequency from 10 to 20 GHz with variations of 0.10 m and 1 GHz respectively. The measurements were taken under the weather conditions of the Andean region and through the insertion of O2 and water vapor the weather conditions of the coast region were simulated. Once the measurements had been carried out, the average values represented in graphs were reached through the data processing software, which allowed comparing the obtained losses inside the anechoic chamber in the free space and making variations in the medium. As a result of these measures, a propagation model from 10 GHz to 20 GHz was determined empirically, in which the propagation losses were established within a controlled environment (anechoic chamber).