“Design of Ultra-Wideband Microstrip Antennas With Slots and Fractal Based Ground Plane”. Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ) 34, no. 2 (October 15, 2021): 244–258. Accessed April 16, 2026. https://jrucs.iq/index.php/JAUCS/article/view/295.