Estudo da correlação espacial em arranjos lineares de antenas na frequência de 26 GHz.

Abstract

Multiple Input Multiple Output (MIMO) systems have been widely used in the mobile communications area as they contribute to meet the demands for higher data transfer rates without the need for increased bandwidth. With the advancement of electronics, structures of devices have been increasingly smaller and with the demand for excellent performance, which makes it necessary to obtain increasingly smaller and more efficient antennas. Therefore, a study is necessary to evaluate the inĆuence of magnetic coupling between the elements when the userŠs antenna operates in reception mode, in the case

where the sources of electromagnetic waves are distant. Thus, this study aims to evalu- ate the spatial correlation of antenna array elements in the 26 GHz frequency reception

mode, proposed for the Ąfth generation (5G) system of mobile communications networks

in Brazil. This evaluation can be done through parameters such as spatial correlation coef- Ącients and spatial correlation coefficients weighted by the matrix of mutual impedances

of the linear array. In this context, this work discusses the design of a linear array of microstrip operating at the frequency of 26 GHz, in the reception mode, and on how the electromagnetic coupling affects the spatial correlation between the elements.