SULONG, N. I.; MOHAMAD, S.; ISLAM, M. R.; HASBULLAH, N. F. A Modified PEC-backed Spiral Antenna with Improved Pattern Symmetry. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), [S. l.], v. 9, n. 3, p. 33–36, 2017. Disponível em: https://jtec.utem.edu.my/jtec/article/view/1353. Acesso em: 8 may. 2024.