Analysis of Efficiency in Dual-Band Antenna for 5G Using FR4 Substrate and Compare with RT Duroid Substrate. Journal of Pharmaceutical Negative Results, [S. l.], p. 811–818, 2022. DOI: 10.47750/pnr.2022.13.S04.093. Disponível em: https://www.pnrjournal.com/index.php/home/article/view/979.. Acesso em: 3 jun. 2026.