Jainal, S. F. ., N. . Mohamed, and A. . Hamzah. “Band Rejections for WLAN and WIMAX Utilizing UWB Planar Antenna by Slits in the Conductor Elements”. International Journal of Integrated Engineering, vol. 12, no. 6, May 2020, pp. 11-19, https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/6201.