@article{saeed_nwajana_2025,  title={Sextuple Stepped-Impedance Resonator Antenna for Multiband Wireless Communication Systems},  volume={24},  ISSN={2179-1074},  url={https://doi.org/10.1590/2179-10742025v24i3295501},  DOI={10.1590/2179-10742025v24i3295501},  number={3},  journal={Journal of Microwaves, Optoelectronics and Electromagnetic Applications},  publisher={Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo},  author={Saeed, Muhammad A. and Nwajana, Augustine O.},  year={2025},  pages={e295501} }