D'assunção, Adaildo GomesBarreto, Edwin Luize Ferreira2014-12-172013-04-242014-12-172012-07-20BARRETO, Edwin Luize Ferreira. Estudo de Superfícies Seletivas de Frequência com o Uso de Inteligência Computacional. 2012. 54 f. Dissertação (Mestrado em Automação e Sistemas; Engenharia de Computação; Telecomunicações) - Universidade Federal do Rio Grande do Norte, Natal, 2012.https://repositorio.ufrn.br/jspui/handle/123456789/15463The main objective of this work is to optimize the performance of frequency selective surfaces (FSS) composed of crossed dipole conducting patches. The optimization process is performed by determining proper values for the width of the crossed dipoles and for the FSS array periodicity, while the length of the crossed dipoles is kept constant. Particularly, the objective is to determine values that provide wide bandwidth using a search algorithm with representation in bioinspired real numbers. Typically FSS structures composed of patch elements are used for band rejection filtering applications. The FSS structures primarily act like filters depending on the type of element chosen. The region of the electromagnetic spectrum chosen for this study is the one that goes from 7 GHz to 12 GHz, which includes mostly the X-band. This frequency band was chosen to allow the use of two X-band horn antennas, in the FSS measurement setup. The design of the FSS using the developed genetic algorithm allowed increasing the structure bandwidthapplication/pdfAcesso AbertoFSS. Superfície Seletiva de Frequência. Circuitos de Micro-ondas. Algoritmo Genético. GAFSS. Frequency Selective Surface. Microwave Circuits. Genetic Algorithm.GAmasterThesisCNPQ::ENGENHARIAS::ENGENHARIA ELETRICA