A Compact Frequency-Reconfigurable Antenna Using a Single PIN Diode for IoT and Sub-6 GHz Applications. Bilad Alrafidain Journal for Engineering Science and Technology, [S. l.], v. 5, n. 2, p. 137–149, 2026. DOI: 10.56990/bajest/2026.050211. Disponível em: https://bajest.bauc14.edu.iq/index.php/bajest/article/view/219. Acesso em: 18 oct. 2026.