CSRRs modificados en tecnología SIW para la mejora del ancho de banda de filtros
In this paper, a substrate integrated waveguide (SIW) loaded with three pairs of modified complementary split-ring
resonators (CSRRs) is presented, in which the subwavelength waveguide passband can be significantly increased
due to the appearance of new electromagnetic couplings between the different resonators. The obtained results are
compared to those provided by a more classical topology based on CSRRs periodically etched along the waveguide
wall, showing a significant bandwidth improvement, while maintaining a good matching level. A prototype of this
new wideband filter has been fabricated and measured, and the simulations and measurements show a very good
agreement, thus validating the proposed design.