Thanh, T. D. T., Quan, P. D., Huu Phuc, P., & Thao, H. T. P. (2025). A Penta-band Antenna using Symmetrical DGS for RF Energy Harvesting in IoT Applications. Engineering, Technology & Applied Science Research, 15(2), 22028–22034. https://doi.org/10.48084/etasr.10138