FENG, W. .; HONG, M. .; CHE, W. . Narrow-band Bandpass Filters with Improved Upper Stopband Using Open/Shorted Coupled Lines. Applied Computational Electromagnetics Society Journal (ACES), [S. l.], v. 31, n. 02, p. 152–158, 2021. Disponível em: https://journals.riverpublishers.com/index.php/ACES/article/view/10233. Acesso em: 17 aug. 2024.