Felegari, N. ., H. R. D. . Oskouei, M. . Akbari, and M. . Mighani. “Design of a Two Bands Circularly Polarized Square Slot Antenna for UWB Application”. Applied Computational Electromagnetics Society Journal (ACES), vol. 28, no. 08, Oct. 2021, pp. 707-11, https://journals.riverpublishers.com/index.php/ACES/article/view/11493.