Baghernia, E. ., and M. H. . Neshati. “Development of a Broadband Substrate Integrated Waveguide Cavity Backed Slot Antenna Using Perturbation Technique”. Applied Computational Electromagnetics Society Journal (ACES), vol. 29, no. 11, Aug. 2021, pp. 847-55, https://journals.riverpublishers.com/index.php/ACES/article/view/10837.