Otimização do número de elementos em um arranjo para antenas inteligentes.

Abstract

Wireless communication systems, especially those involving mobility, are becoming increasingly complex due to demand for higher data rates, coverage requirements, new applications, reliability, low power consumption and nowadays, considered most recently, the presence of adaptive systems such as software-defined radio. One technique that has been proposed for systems with the above requirements is the use of antennas that are able to direct the propagation direction to an user while reducing propagation in direction of the other signals. These antennas known as adaptive antennas have been used for decades in applications such as radar, satellite communications, remote sensing and equipments search, among others. In this work we optimize the array size that forms an adaptive antenna, in order to obtain a minimal array that attends a given Signal to Interference Ratio – SIR.