Wulandari, D. P., Wijayanto, H., & Edwar, E. (2019). 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(1), 20–25. https://doi.org/10.25124/jmecs.v5i1.2018