Zi-Jian Han, Wei Song, and Xin-Qing Sheng. “Broadband Circularly Polarized Antenna by Using Polarization Conversion Metasurface”. Applied Computational Electromagnetics Society Journal (ACES) 35, no. 6 (June 1, 2020): 656–661. Accessed April 26, 2026. https://journals.riverpublishers.com/index.php/ACES/article/view/7833.