Ahmadu Girgiri, et al. “Design of Miniaturized On-Chip Monopole Planar Antenna With Loaded Interdigital Capacitor for 5.8 GHz Devices”. International Journal of Integrated Engineering, vol. 17, no. 1, Apr. 2025, pp. 438-50, https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/17938.