Design of Quad-Band Bandpass Filter Lumped-Element Using Shunt Resonator and Independent Transmission Zero. International Journal of Information and Electronics Engineering, [S. l.], v. 3, n. 6, p. 626–628, 2013. Disponível em: http://ijiee.org/index.php/ijiee/article/view/759. Acesso em: 2 may. 2026.