Análisis de estructuras planares para polarización de elementos activos de radiofrecuencia en aplicaciones radiantes en la banda S.

Abstract

In this project, the analysis of planar structures for polarization of radiofrequency active elements in S-band radiant applications is developed. The study considers planar structures such as simple stubs, radial stubs, and butterfly stubs. The first chapter introduces the techniques used for the implementation of radiofrequency reconfigurable circuits, the electronic components to achieve the reconfigurability such as the FET, varactor diode, PIN diode and their biasing. Additionally, information about the behavior, characteristics and classes of the lumped elements and planar structures in radiofrequency is included. The second chapter shows a general idea of the relationship between lumped elements and distributed elements, the equivalence that exists between each of them, as well as the mathematical expressions and processes to achieve it. The third chapter presents three circuits with proposed planar structures that replace the lumped elements and the process for the design of these elements. Additionally, it details the results and analysis of the simulations performed on the proposed circuits with the Keysight Advanced Design System (ADS) software. Finally, the fourth chapter presents the recommendations and conclusions obtained from this project.