Desenvolvimento de um sistema para obtenção do índice de refração na faixa de micro-ondas, utilizando espalhamento por cilindro

Abstract

In this dissertation, we will make a brief introduction about electromagnetic scattering, introducing the fundamental concepts necessary to address the scattering problem. We will also define the vector cylindrical harmonics and some of their properties. The entire experimental setup will be developed, so that we can apply the scattering theory in the microwave range in an infinite cylinder, so that through the characteristic of the intensity of the scattered wave we can determine the physical properties, for example the index of refraction of the cylinder in this region of the spectrum. This will be done by comparing the theoretical, experimental and computational results. In addition, we will make an introduction about the computational method FDTD, which is capable of solving Maxwell’s equations numerically describing the propagation, transmission and spreading of electromagnetic waves in any medium. Becoming a very useful method for the execution of computational results, present in this master’s thesis.