Wulandari, Dina Puspa, Heroe Wijayanto, and Edwar Edwar. “An Investigation of Defected Ground Structure Effect on Bandwidth Enhancement of U-Shape Microstrip Antenna for Small Ultra Wide-Band Radar Device”. JMECS (Journal of Measurements, Electronics, Communications, and Systems) 5, no. 1 (December 31, 2019): 20–25. Accessed September 10, 2025. https://journals.telkomuniversity.ac.id/jmecs/article/view/2018.