MOHAMMADI, M. Modal Analysis of Directional Coupler and Its Equivalent Circuit. Advanced Electromagnetics, [S. l.], v. 8, n. 4, p. 103–107, 2019. DOI: 10.7716/aem.v8i4.1252. Disponível em: https://www.aemjournal.org/index.php/AEM/article/view/1252. Acesso em: 5 feb. 2023.