Compact Quad-Port MIMO Antenna Employing Defected Substrate and Ground Plane for Sub-6 GHz 5G Communication. - Bhaskara Rao Perli; Tathababu Addepalli; Manumula Srinubabu; Sivasubramanyam Medasani; Padmaja Nimmagadda; Raju C.; Manish Sharma 002; Zahriladha Zakaria; Ahmed Jamal Abdullah Al-Gburi (IEEE Access, 2025)