Hong, Wongook, Naobumi Michishita, and Yoshihide Yamada. “Low-Profile Normal-Mode Helical Antenna for Use in Proximity to Metal”. Applied Computational Electromagnetics Society Journal (ACES) 25, no. 3 (June 17, 2022): 190–198. Accessed May 13, 2026. https://journals.riverpublishers.com/index.php/ACES/article/view/15605.