Alhawari, A. R. H. “Improving UWB Microstrip Antenna Using Corrugated Compact Design for Wireless Communication Systems”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), vol. 9, no. 4, Dec. 2017, pp. 45-48, https://jtec.utem.edu.my/jtec/article/view/1712.