Zhao, Y. ., L. . Zhong, J.- song . Hong, and G.- min . Zhang. “A Monopole Antenna With SIR Ground for Harmonic Suppression and Bandwidth Enhancement”. Applied Computational Electromagnetics Society Journal (ACES), vol. 26, no. 8, May 2022, pp. 705-8, https://journals.riverpublishers.com/index.php/ACES/article/view/15431.