Bao, Z.-H., Q.-Y. Lu, C. Shao, J.-X. Chen, and S. Zhang. “Novel Bandwidth-Agile Bandpass Filter Using Defected Ground Structure”. Applied Computational Electromagnetics Society Journal (ACES) 28, no. 11 (September 27, 2021): 1050–1055. Accessed May 13, 2026. https://journals.riverpublishers.com/index.php/ACES/article/view/11313.