Phomphankorn, P. ., S. . Dentri, and C. . Phongcharoenpanich. “Surface Monopole Antenna on Reflector for Ultra-Wideband Applications”. Engineering and Technology Horizons, vol. 37, no. 4, Dec. 2020, pp. 18-25, https://ph01.tci-thaijo.org/index.php/lej/article/view/242657.