Hafiz Usman Tahseen, Lixia Yang, and Wang Hongjin. “A Broadband H-Plane Printed Horn Antenna With Sandwich Substrate Structure for Millimeter-Wave Applications”. Applied Computational Electromagnetics Society Journal (ACES), vol. 36, no. 3, Mar. 2021, pp. 295-01, https://journals.riverpublishers.com/index.php/ACES/article/view/7341.