MASRUKIN, Y. E.; HASSIM, N.; ZAKARIA, Z.; ALI, N. S. A. S.; M NOH, M. S. A. New Compact Dual-Band Bandpass Filter Using Stepped Impedance Resonator and U-Shaped Microstrip Structure. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), [S. l.], v. 9, n. 2-8, p. 99–102, 2017. Disponível em: https://jtec.utem.edu.my/jtec/article/view/2636. Acesso em: 2 dec. 2022.