Tang, M.-C. ., H. . Wang, L. . Guo, X. . Zeng, H. . Liu, and Y. . Pang. “A Compact Dual-Band Patch Antenna Design Based on Single-Ring Split Ring Resonator”. Applied Computational Electromagnetics Society Journal (ACES), vol. 31, no. 03, Aug. 2021, pp. 321-6, https://journals.riverpublishers.com/index.php/ACES/article/view/10213.