Sun, Yuanhua, Guangjun Wen, Haiyan Jin, Ping Wang, Yongjun Huang, and Jian Li. “Wide Bandwidth Endfire Antenna With Log-Period Directors”. The Applied Computational Electromagnetics Society Journal (ACES) 30, no. 11 (August 22, 2021): 1173–1179. Accessed May 22, 2024. https://journals.riverpublishers.com/index.php/ACES/article/view/10331.