General three-phase dielectric dispersion model for MHz–GHz frequencies

Develop a general three-phase dielectric dispersion pedophysical model for soils that is valid across the MHz–GHz frequency range.

Background

Dielectric dispersion modeling aims to capture how soil dielectric properties vary with frequency. Existing models often target limited frequency ranges, specific textures, or do not account for all relevant mechanisms (e.g., Maxwell–Wagner polarization). The Longmire–Smith model, for example, is noted to have limitations for wet clays and higher frequencies.

The paper explicitly cites the ongoing need, as also stated in González-Teruel et al. (2020), for a comprehensive three-phase model spanning MHz–GHz frequencies that would unify treatment across conditions and improve multi-sensor data fusion.