NASRABADI, Esmail, and Pejman REZAEI. “A New Design of Planar Frequency Reconfigurable Antenna With WiMAX and WLAN Band Rejection for UWB Applications”. International Journal of Natural and Engineering Sciences, vol. 8, no. 1, June 2019, pp. 49-52, https://www.ijnes.org/index.php/ijnes/article/view/176.