Ka Chin C, Awang Mat DA, Truna MN, et al. Design of Dumbbell Shaped DGS-Notch Patch Antenna for Microwave Imaging System. IJIE. 2020;12(6):94-104. Accessed April 7, 2026. https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/6386