Mengphan, Sureeporn, Supakit Kawdungta, and Rassamitut Pansomboon. “Compact E-Shaped Loop Patch Antenna for LoRaWAN Systems”. Engineering and Technology Horizons 40, no. 4 (December 19, 2023): 400407. accessed August 27, 2026. https://ph01.tci-thaijo.org/index.php/lej/article/view/253716.