Zhou, Yuliang, Kaiyuan Yao, Xiaona Li, Yong Mao Huang, and Haiyan Jin. “Phase-Shifter-Less Vortex Electromagnetic Wave Generation Technology With Tunable Topological Charge/Steering Angle under Random Initial Phase Condition of Phase-Locked Source”. Applied Computational Electromagnetics Society Journal (ACES) 38, no. 2 (February 28, 2023): 154–161. Accessed September 13, 2024. https://journals.riverpublishers.com/index.php/ACES/article/view/18217.