“Compact Single Layer CPW-Fed Antenna with Hexagonal Slot for Ultra Wideband Applications”, Int. J. Curr. Eng. Technol., vol. 5, no. 3, pp. 2008–2014, Jun. 2015, Accessed: Apr. 10, 2026. [Online]. Available: https://ijcet.evegenis.org/index.php/ijcet/article/view/2306