Simulation-Based Design of a 27 GHz Two-Port Concentric Ring-Slot Microstrip Antenna for 5G mmWave Applications. Al-Noor Journal of Engineering Management and Computer Science, [S. l.], v. 2, n. 4, p. 171–176, 2026. DOI: 10.71229/71q72j81. Disponível em: https://njemcs.edu.iq/index.php/njemcs/article/view/145. Acesso em: 5 sep. 2026.