Study and Analyses Frequency Spectrum of the Modulated Signal. American Journal of Engineering , Mechanics and Architecture (2993-2637), [S. l.], v. 3, n. 1, p. 58–74, 2025. Disponível em: https://grnjournal.us/index.php/AJEMA/article/view/6641. Acesso em: 23 jan. 2026.