NAVEED ULLAH, and Ahmet Tekin. “Omni-Directional Wideband Antenna Array With Solar Cells”. Journal of Microwaves, Optoelectronics and Electromagnetic Applications (JMOe) 20, no. 1 (December 11, 2020): AoP 60–75. Accessed January 19, 2021. http://www.jmoe.org/index.php/jmoe/article/view/885.