ZAYED, A. S. A.-.; HEJAZI, Z. M. .; MOHRA, A. S. . A Microstrip Directional Coupler with Tight Coupling and Relatively Wideband using Defected Ground Structure. Applied Computational Electromagnetics Society Journal (ACES), [S. l.], v. 25, n. 10, p. 877–887, 2022. Disponível em: https://journals.riverpublishers.com/index.php/ACES/article/view/15801. Acesso em: 13 may. 2026.