Mohammed JR, Khamees AA. Analysis of Performance Improvement of Planar Antenna Arrays With Optimized Square Rings for Massive MIMO Applications. J. Electron. Electric. Eng. [Internet]. 2024 Apr. 8 [cited 2024 Jul. 7];3(1):166–173. Available from: https://ojs.wiserpub.com/index.php/JEEE/article/view/4146