A Compact 8×8 Dual-Band MIMO Antenna Array with Hybrid Decoupling for Sub-6 GHz and mmWave 5G Smartphone TerminalsAdnane Ghiat, Jesús R. Pérez, Abdelwahed Tribak, Jaouad Terhzaz and Rafael P. TorresEPJ Web Conf., 380 (2026) 01005DOI: https://doi.org/10.1051/epjconf/202638001005