IBRAHIM, I. M.; AL-GBURI, A. J. A.; ZAKARIA, Z.; BAKAR, H. A. Parametric Study of Modified U-shaped Split Ring Resonator Structure Dimension at Ultra-Wide-band Monopole Antenna. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), [S. l.], v. 10, n. 2-5, p. 53–57, 2018. Disponível em: https://jtec.utem.edu.my/jtec/article/view/4350. Acesso em: 2 dec. 2022.