Ripin, N., A. A. Sulaiman, and N. E. A. Rashid. “An Equivalent Circuit Model of Miniature Double E-Shaped Meander Line Printed Monopole Antenna”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), vol. 10, no. 2-5, July 2018, pp. 59-63, https://jtec.utem.edu.my/jtec/article/view/4351.