Redes de antenas filamentares instaladas em VANTs para telemetria e comunicação de dados

Abstract

This work presents a methodology for simulating an array of wire antennas installed on unmanned aerial vehicle (UAV). Initially, some techniques available on HFSS that are suitable for the proposal application are discussed in terms of accuracy and computational effort. In the first part of this work, these techniques are used to find the optimum position to install a monopole on the airchaft under analysis, so as to obtain the best performance in terms of radiation pattern. In the second part, the analysis of antenna array installed on the UAV are described in order to achieve full-coverage with larger gain than it is achieved with a single monopole. Full coverage rage is meant here when the link never drops independently of the position of airplane. Furthermore, some methods of impedance matching and a preliminary feeder design for the antenna arrays are also discussed. The proposed methodology is detailed and generic enough so that it can be applied to different airplanes (UAVs and commercial aircraft). The radiation patterns are presented in various settings and comments are made. Besides, some comments to explain the effect of variating the parameters of an array of antennas in terms of its radiation patterns are given throughout the work.