A new approach for estimating the complex permittivity of powdered dielectrics using a rectangular waveguide in the X-bandOmaima Talmoudi, Lahcen Ait Benali, Jaouad Terhzaz, Abdelwahed Tribak and Tomas Fernandez IbañezEPJ Web Conf., 380 (2026) 01025DOI: https://doi.org/10.1051/epjconf/202638001025