Caracterização de uma família de ressonadores planares: estruturas circulares autossimilares para aplicação de circuitos de micro-ondas

Abstract

The present work aims to develop and structure a family of circular and self-similar resonator devices based on modeling by microstrip technique with planar structures to determine resonances and frequency bands, allowing to identify and locate the structuresthat resonate. The methodology behind thisstudy is described in two parts: In the computational elaboration procedure (structuring and parameterization) and the simulation in different aspects. Mathematical modeling of the family of resonator devices was carried out, the parameters of wavelength and radii of the central and adjacent resonator rings were calculated, as well as the boundary conditions for the family of resonators in a computational environment. The structures that showed adequate resonance levels were characterized by band-stop filters through the scattering parameters. The construction of the characteristic filters took place by configuring the parallel of electrical network topologies (low-pass and/or high-pass) with similar responses. The main and adjacent rings were repaired to analyze the maximum transmission and maximum resonance. This study also analyzed the surface current distributions for structures that presented different behavior in relation to their resonances. In this way, the results show: resonance in different frequency bands, tuning of parameters for maximum resonance by reparametrization and the dynamics of surface currents in the resonator rings.