Ultra-Wideband Multi-Resonance High-Performance Graphene-Enhanced Multi-Square Slotted Two-Port MIMO Antennas With Machine Learning-Driven Optimization for 6G Terahertz Communication. - Md. Ashraful Haque; Mahafujul Haq Riad; Maruf Billah; Jun-Jiat Tiang; Narinderjit Singh Sawaran Singh; Hanaa A. Abdallah; Abdelhamied A. Ateya (IEEE Access, 2026)