Chao Chen, Jiandan Zhong, and Yi Tan. “Broadband Conformal End-Fire Monopole Log-Periodic Antenna Array”. Applied Computational Electromagnetics Society Journal (ACES), vol. 34, no. 12, Dec. 2019, pp. 1845-50, https://journals.riverpublishers.com/index.php/ACES/article/view/8067.