Campos, Antônio Luiz Pereira de SiqueiraAlmeida Filho, Valdez Aragão de2014-12-172014-10-232014-12-172014-03-12ALMEIDA FILHO, Valdez Aragão de. Aplicação de superfícies seletivas em frequência para melhoria de resposta de arranjos de antenas planares. 2014. 93 f. Tese (Doutorado em Automação e Sistemas; Engenharia de Computação; Telecomunicações) - Universidade Federal do Rio Grande do Norte, Natal, 2014.https://repositorio.ufrn.br/jspui/handle/123456789/15252This work aims to show how the application of frequency selective surfaces (FSS) in planar antenna arrays become an alternative to obtain desired radiation characteristics from changes in radiation parameters of the arrays, such as bandwidth, gain and directivity. In addition to analyzing these parameters is also made a study of the mutual coupling between the elements of the array. To accomplish this study, were designed a microstrip antenna array with two patch elements, fed by a network feed. Another change made in the array was the use of the truncated ground plane, with the objective of increasing the bandwidth and miniaturize the elements of the array. In order to study the behavior of frequency selective surfaces applied in antenna arrays, three different layouts were proposed. The first layout uses the FSS as a superstrate (above the array). The second layout uses the FSS as reflector element (below the array). The third layout is placed between two FSS. Numerical and experimental results for each of the proposed configurations are presented in order to validate the researchapplication/pdfAcesso AbertoArranjos de antenas planares. Superfícies seletivas em frequência. Redução de dimensões. Modificação de parâmetros de radiaçãoPlanar antenna arrays. Frequency selective surfaces. Dimension reduction. Parameter radiation modificationdoctoralThesisCNPQ::ENGENHARIAS::ENGENHARIA ELETRICA