Darsono, M. and Rega, M. 2023. Optimization of Ultra-Wideband bandwidth for the design of microstrip monopole antennas using Defected Ground Structure and star-shaped patche. SINERGI. 27, 3 (Sep. 2023), 309–318. DOI:https://doi.org/10.22441/sinergi.2023.3.002.