Gunantara, Nyoman, Made Adi Surya Antara, and NMAE Dewi Wirastuti. “Implementation of RF Band-Pass Filter on UMTS Systems to Improve Quality of Service”. Journal of Telecommunications and the Digital Economy 7, no. 2 (June 15, 2019): 31–49. Accessed January 8, 2025. https://mail.jtde.telsoc.org/index.php/jtde/article/view/179.