Jabire, Adamu HaliluAbdullahi, Aminu GamboSaminu, SaniJajere, Adamu MuhammedSadiq, Abubakar Muhammad2022-01-102022-01-102021-01https://uilspace.unilorin.edu.ng/handle/20.500.12484/7289This paper presents a mutual coupling reduction using stub and partial ground structure. The driven analysis comprises four antennas that are placed orthogonal to each other. A decoupling network is proposed, which consists of one long stub extended between the four defected ground structure for electromagnetic interaction reduction. The proposed antenna has triple-band frequencies at 3 GHz, 5.5 GHz, and 7.1 GHz. The performance of the four by four antenna arrays is evaluated based on envelope correlation coefficient, isolation, mean effective gain, channel capacity loss, total active reflection coefficient, and diversity gain. The results strongly support the applicability of fifth-generation sub 6 GHz applications.enMultiple Input Multiple Output AntennaMutual CouplingDecoupling StructureIsolationArticle