Zaman, M. R. ., M. T. . Islam, and S. . Kibria. “A Novel U-Shaped Parasitic Asymmetric Microstrip Cap Loaded Compact Patch Antenna”. Applied Computational Electromagnetics Society Journal (ACES), vol. 30, no. 02, Aug. 2021, pp. 191-03, https://journals.riverpublishers.com/index.php/ACES/article/view/10659.