Arifin, M.Z., Mairizwan, M., Asrizal, A. and Sari, M. 2026. Portable Impedance Spectrometer for Characterizing the Electrical Properties of Dielectric Materials Using A Goertzel Filter. Journal of Experimental and Applied Physics. 4, 1 (Mar. 2026). DOI:https://doi.org/10.24036/jeap.v4i1.166.