O. J. M. Smith, K. N. Kantor, A. A. Zaky, G.F. Freire. “Low-Profile Ultra-Wideband Antenna With Integrated Filtering for High-Data-Rate Wireless Communication Systems”. National Journal of Antennas and Wireless Communication Systems, vol. 1, no. 1, Dec. 2025, pp. 36-43, http://www.antennawirelessjournal.com/Index/index.php/home/article/view/5.