A Compact Multiport Sensing and Communicating Antenna System for Cognitive Radio Applications. Indian Journal of Pure & Applied Physics (IJPAP), [S. l.], v. 63, n. 12, 2025. DOI: 10.56042/ijpap.v63i12.21438. Disponível em: https://or.niscpr.res.in/index.php/IJPAP/article/view/21438. Acesso em: 13 may. 2026.