Projeto e Análise de Antena de Microfita com Utilização de Metamaterial do tipo CSRR

Detalhes bibliográficos
Ano de defesa: 2014
Autor(a) principal: Silva, Isaac Barros Tavares da
Orientador(a): Não Informado pela instituição
Banca de defesa: Não Informado pela instituição
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Federal Rural do Semi-Árido
BR
Centro de Engenharias - CE
UFERSA
Programa de Pós-Graduação em Sistemas de Comunicação e Automação
Programa de Pós-Graduação: Não Informado pela instituição
Departamento: Não Informado pela instituição
País: Não Informado pela instituição
Palavras-chave em Português:
Link de acesso: https://repositorio.ufersa.edu.br/handle/tede/524
Resumo: Microstrip patch antennas consist of a metallic strip over a dielectric substrate and widely used because of its small size and versatility of its dimensions and possible configurations of the patch to achieve specific characteristics of resonance frequency, bandwidth, directivity and return loss. Due this versatility of its parameters, this work presents a microstrip patch antenna proposal involving the insertion of two Complementary Split Ring Resonators (CSRR), as the variation of its dimensions, and will be developed a study of CSRR s influence in antenna s parameters, designed by Transmission Line Theory, with the objective of increasing the antenna s bandwidth and filtering certain frequencies; and manufacture a device which operates in Ultra Wideband (UWB) system. The application of dielectric multilayers will be also studied with the objective of evaluate its influence in antenna s return loss. The software ANSYS HFSS® was used as an auxiliary tool to simulate the antennas parameters and the best results, as well the evaluation about the available material, were used to build the devices and measure them to validate the results previously simulated. The simulations results matched with the expected behavior of the return loss, because the filter characteristic appeared in some frequencies and the result presented a dual-band characteristic. The experimental result for the return loss agreed with the simulated pattern, despite the dislocated frequency to higher values, but just one of the measured antennas could be used in the UWB system with fractional bandwidth of 34,12% in the resonance frequency of 4,35 GHz with return loss of -36,22 dB, allowing the operation in many wireless communication systems like the IEEE standards 802.11a, 802.11n and 802.11p