Metasurface-Driven Improvement in MIMO Antenna Performance by Addressing Mutual Coupling. - Jaouad, Safia; Chahboun, Chaymae; Ennasar, Mohammed A.; Mrabet, Otman E. L.; Perez, Jesús R.; Khalladi, Mohsine; Aznabet, Mariem (Progress in Electromagnetics Research C, 2026)