Y. L. Chan, F. Esa, K. Y. You, R. Abdul Kahar, and Z. Abbas, “Complex Permittivity of Materials at Broadband Frequency using Transmission Phase Shift Method”, jst, vol. 9, no. 3, Dec. 2017, Accessed: Aug. 14, 2026. [Online]. Available: https://journal.uthm.edu.my/index.php/JST/article/view/2059