Bakshi, R. ., and S. K. . Sharma. “A Wideband U-Slot Loaded Modified E-Shape Microstrip Patch Antenna and Frequency Agile Behavior by Employing Different Height Ground Plane and Ribbon Type Switches”. Applied Computational Electromagnetics Society Journal (ACES), vol. 26, no. 7, May 2022, pp. 539-50, https://journals.riverpublishers.com/index.php/ACES/article/view/15395.