Projeto de arranjos de antenas microstrip patch

• Autor(a) principal: Andrade, Larissa Roberta [UNESP]
• Data de Publicação: 2019
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/203137; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2019-03-19/000913028.pdf
• topic: Antenas (Eletrônica); Linhas de transmissão em fita; Telecomunicações; Antennas (Electronics); Strip transmission lines; Telecommunication

This work presents a methodology for the design, analysis, and construction of microstrip patch antennas, that with the development of wireless communications become fundamental in the systems performance devices. The requirement for devices with compact dimensions, low cost and easy to manufacture are met by these antennas, which on the other hand has a narrow band, gain and low directivity disadvantages. In the design phase, the antenna sizing results were from the resonance frequency fr of 2.45GHz, substrate thickness (h) of 0.8mm, FR4 of dielectric constant of 4.4, and 50 input impedance. In the simulation stage from the HFSS software, parametrizations were made in order to optimize the performance of the patch antenna with one element, where the parameterizations were very sensitive to optimizations, besides a study of the impact of the choice of the tangent of losses and substrate dimensions on performance parameters such as gain and directivity. In the arrangement configuration, two strands were studied, series feeding, and in parallel. In the series arrays were designed in the simulator, two and four elements, analyzing the variation of parameters such as the distance between the elements, thickness and length of the feed line, thickness and length of the marriage structure, and the antenna format itself. The construction of the four-element series arrangement and the comparison between simulated and practical results were made proving that the project was successful. In the parallel arrangement, it was developed with power supply through a power slitting, for eight elements. The comparison of the projects with the reflection coefficient (|S11|), all presented better results than the minimum stipulated for similar projects (S11− 10dB). As for directivity, the addition of elements made the radiation pattern more directive according to the plane of addition of the elements. Finally, four series...