Determinación de un modelo de propagación empírico para entornos indoor en la banda de frecuencias de 10 a 20 GHZ.

Abstract

This research was aimed to determine an empirical propagation model for indoor environments in the frequency band from 10 to 20 GHz. Two cornet-type antennas with an aperture dimension of 5cm were used to achieve this determination, a vector network analyzer, a signal generator, and a spectrum analyzer. The antennas were characterized using the vector network analyzer at a distance of 0.34m (far-field) and frequency variations of 100 MHz. The measurements were made using the horn-type antennas connected to the signal generator and the spectrum analyzer, respectively, with distance variations of 1m. These measurements were carried out at Computer Science and Electronics Faculty within the Microwave Laboratory with a line of sight (LOS) environment, being the maximum separation distance between Transmitter and Receiver of 7m. From classroom 302 to 303, a Non-Line of Sight (NLOS) environment at a maximum distance of 6m with a wall between them. The material's insertion losses were determined by introducing a piece of wall into the anechoic chamber, obtaining higher losses at higher frequencies. For this reason, a general equation was deduced that describes this behavior. The resulting empirical propagation model is considered acceptable as it roughly predicts the real environment with a 4.48 square error.