F. B. . Zarrabi, N. P. . Gandji, R. . Ahmadian, H. . Kuhestani, and Z. . Mansouri, “Modification of Vivaldi Antenna for 2-18 GHz UWB Application with Substrate Integration Waveguide Structure and Comb Slots”, ACES Journal, vol. 30, no. 08, pp. 844–849, Aug. 2021.