Diseño y simulación de transiciones para excitación de guía de onda integrada en sustrato para operar en banda X : Excitación de una guía siw utilizando línea microstrip en banda X.

Abstract

This work presents two types of transitions that use the microstrip line to excite a substrate-integrated waveguide that operates in the X-band. Three chapters are presented in this work, distributed as follows: The basic concepts related to the traditional waveguide, substrate-integrated waveguide (SIW) and microstrip line are presented in Chapter 1. In addition, the different ways used to excite a substrate integrated waveguide (SIW) and the microstrip line are presented. In the second chapter, the design of the traditional waveguide and the SIW waveguide is developed based on the equations already determined in chapter one, with the objective of verifying that the operation of the SIW waveguide is similar to that of the traditional waveguide. Once this similarity of operation was established, two microstrip-SIW transitions were designed, the first using a linear taper and the second using a linear taper with inserts. In chapter 3, the simulated and optimized results of the transitions mentioned in chapter two are analyzed until a successful match between the microstrip line and the SIW guide is obtained, using the 3D electromagnetic simulation software. Therefore, the S- parameters (return and insertion losses) are obtained for each of the transitions. Subsequently, a comparison is made as to which of the two transitions presents the best results in terms of adaptation and bandwidth. In addition, the conclusions and recommendations of the work carried out are presented.