Elechi, Promise, S. Orike, and C.E. Ikpo. 2021. “Performance Analysis of Patch Antenna for Ultra-Wideband Using Particle Swarm Optimization”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC) 13 (3):53-59. https://jtec.utem.edu.my/jtec/article/view/6128.