A. Othman, “Convertible Bandstop to Allpass Filter using Defected Ground Structure with Ideal Switch for Millimeter-Wave Band in 5G Application”, IJIE, vol. 15, no. 3, pp. 193–198, Oct. 2023, Accessed: Nov. 07, 2026. [Online]. Available: https://journal.uthm.edu.my/index.php/ijie/article/view/14555