Fernandes, Humberto César ChavesSilva Neto, Almir Souza e2017-02-172017-02-172016-08-22SILVA NETO, Almir Souza e. Antenas de microfita para 4G, 5G e arranjo de antenas cilíndricas. 2016. 194f. Tese (Doutorado em Engenharia Elétrica e de Computação) - Centro de Tecnologia, Universidade Federal do Rio Grande do Norte, Natal, 2016.https://repositorio.ufrn.br/jspui/handle/123456789/22045Nowadays there has been a major breakthrough in aerospace, in telemetry system, remote sensing, radar systems (tracking and monitoring), satellite communications systems and new technologies for voice and data communications. The microstrip antennas have increasingly been used due to their characteristics and advantages. Thus, this work presents analysis, simulations and measurements of microstrip antenna for use in: wireless local area networks WLAN (Wireless Local Area Network) with operation at 2.4 GHz; fourth generation 4G technology for use in 2.5 GHz; fifth-generation technology 5G at frequencies of 28 GHz and 60 GHz; applications in UWB (Ultra Wide Band) with rejection bands using resonators party ring; satellites operating in the Ku band and application in telemetry using cylindrical structures operating at 2 to 4 GHz band, the S band. Analysis were made with application of EBG structure (Electromagnetic Band Gap) on substrate and in the ground plane, using substrate metamaterial, application DGS structures (Defected Ground Structures) in the ground plane and arrangements, in order to achieve improvement in the parameters, in particular gain and bandwidth. The method of analysis of microstrip antennas used in this work was the Transverse Transmission Line method. The simulated results were obtained by Ansoft HFSS commercial software. Comparisons between simulated and measured results of the antennas proposals were made for effect of validation of the prototypes. Suggestions are made for the continuity of this work.Acesso AbertoAntenas de microfitaArranjo de antenas cilíndricasTecnologia 4GTecnologia 5GdoctoralThesisCNPQ::ENGENHARIAS::ENGENHARIA ELETRICA E DE COMPUTAÇÃO