Chao Kang, Chia, and Chia Yang Kang. “Circularly Polarize Antenna Array for Electromagnetic Energy Harvesting”. International Journal of Engineering & Technology 7, no. 2.29 (May 22, 2018): 1–3. Accessed May 4, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/13114.