Fakharian, M. M. ., P. . Rezaei, and A. A. . Orouji. “A Novel Slot Antenna With Reconfigurable Meander-Slot DGS for Cognitive Radio Applications”. Applied Computational Electromagnetics Society Journal (ACES), vol. 30, no. 07, Aug. 2021, pp. 748-53, https://journals.riverpublishers.com/index.php/ACES/article/view/10471.