Hemmuang J, Phongcharoenpanich C. Design of Circular Ring Patch Antenna on Split-Ring Resonator Metasurface for Dual-Band Applications. Eng. & Technol. Horiz. [Internet]. 2021 Jun. 14 [cited 2024 Apr. 29];38(2):31-9. Available from: https://ph01.tci-thaijo.org/index.php/lej/article/view/244461