N. A. M. Nasir, H. Ja’afar, N. H. A. Aziz, I. Rustam. 2021. “Study on Different Slot Positions for Dual Band Antenna Applications for Ku-Band and X-Band”. Design Engineering, November, 12819 -26. http://thedesignengineering.com/index.php/DE/article/view/6403.