1.
Al Ghifarry MF, Kamardin K, Yoshihide Yamada, Idris IH. Electromagnetic Simulation of Metamaterial Lens Antenna with Negative Refractive Index at 28GHz. IJIE. 2025;17(6):71-83. Accessed July 22, 2026. https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/21875