Mohammadi , A. ., and M. N. . Azarmanesh. “A Novel Compact Low-Pass Filter Using Defected Ground Structure for Sharp Transition Band”. Applied Computational Electromagnetics Society Journal (ACES), vol. 29, no. 01, Sept. 2021, pp. 84-90, https://journals.riverpublishers.com/index.php/ACES/article/view/11139.