Kai-Da Xu, and Fengyu Zhang. “High Selectivity Bandpass Filter Using Three Pairs of Coupled Lines Loaded With Shorted Stubs”. Applied Computational Electromagnetics Society Journal (ACES) 34, no. 03 (March 1, 2019): 469–474. Accessed June 2, 2026. https://journals.riverpublishers.com/index.php/ACES/article/view/8571.