Estudio de reconfigurabilidad de las características circuitales/radiantes en estructuras de antenas: reconfiguración en frecuencia.

Abstract

This works shows the design, modeling, and simulation of a reconfigurable antenna in terms of frequency that operates in each of the bands of the new wireless communications standard WiFi-7. This is realized considered the theory concerning to the antennas reconfigurability and with a special emphasis on frequency reconfigurability. The approach starts with the design of a wideband antenna made using microstrip technology. To achieve this objective, a resonant ring slot antenna is previously designed and later its dimensions are varied together with the geometry of the feeding line. The relevant analysis is performed in an electromagnetic simulation software. With the obtained wideband antenna, the design a band-pass filter for each of the frequency bands (2,4 GHz; 5 GHz and 6 GHz) by using microstrip coupled lines is realized. The behavior of these filters is verified in the software Advanced Design System (ADS). Finally, the integration of both structures is performed in order to achieve frequency reconfigurability and to select each of the mentioned bands with the help of the adequate filter. In addition, the performance of the complete structure is evaluated after the optimization process and analysis results in ADS. Chapter 1 briefly describes the theory related to the work as well as the description of similar implementations. Afterwards, Chapter 2 describes the methodology used for the analysis of frequency reconfiguration in antennas. Finally, Chapter 3 shows the analysis results, conclusions and recommendations derived by the work.