A. KABEEL, A.; H. HUSSEIN, A.; A. M. KHALAF, A.; F. A. HAMED, H. High Gain UWB Antenna Element Design for Cognitive Radio Systems using Low Cost FR4 Substrate. American Scientific Research Journal for Engineering, Technology, and Sciences, [S. l.], v. 51, n. 1, p. 56–65, 2019. Disponível em: https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/4591. Acesso em: 3 may. 2024.