A novel Slotted Rectangular Microstrip patch antenna based on Zero-index metamaterial multilayer Superstrate. International Journal of Multidisciplinary and Current Research, [S. l.], v. 4, n. 5, p. 916–920, 2016. DOI: 10.14741/. Disponível em: https://ijmcr.com/index.php/ijmcr/article/view/04.05.15. Acesso em: 27 aug. 2026.