Análise de antenas de microfita planares utilizando o método dos momentos e funções base com condição de borda

Abstract

The growth of the computational power, in the last decades, allowed solving problems in Electromagnetics that do not have analytical solutions. This led to the development of a field known as Computational Electromagnetics, which boosted the development of powerful numerical techniques. In this context, the present document describes the work developed in the frame of a bachelor thesis, which consists on the construction of a computational tool in Matlab R○ environment for the analysis of microstrip antennas. The antenna analyzed has rectangular shape, a single dielectric layer and is fed by a coaxial probe. The numerical method used in the implementation of the algorithm was the Method of Moments. In the validation of the tool, first, the algorithm is compared with other implementations of the Method of Moments found in the literature. Then, a microstrip antenna design is performed in commercial software and, based on the parameters obtained, the antenna is prototyped, whose measured results are compared with the commercial software and the developed tool. Subsequently, tests are performed considering edge conditions in the basis functions. Finally, it is worth mentioning that the tool aims to analyze a simple antenna geometry, but it can be modified for applications in more complex structures in future work.