S. H. Yusop, N. Misran, M. T. Islam, and M. Y. Ismail, “Analysis of Concentric Split Ring Square Element for Broadband Reflectarray Antenna”, ijie, vol. 1, no. 3, Dec. 2009, Accessed: May 03, 2024. [Online]. Available: https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/100