Circular Section Metal Wall cut-off Waveguide Accurate Calculation when used as a Standard Attenuator. Global Journal of Science Frontier Research, [S. l.], v. 24, n. A1, p. 1–29, 2024. Disponível em: https://testing.journalofscience.org/index.php/GJSFR/article/view/102848. Acesso em: 4 feb. 2026.