Measurement of the dielectric constant of solid samples in the frequency range 25 Hz - 1 GHz
The method of measurement of the complex relative permittivity (CRP) of the solid samples (rock, wood, technical insulator, etc.) is presented. The frequency range was measured by two instruments: by LCR-meter at frequencies up to 1 MHz and by a vector network analyzer at frequencies above 0.3 MHz. The measurement error of the real and imaginary parts of the CDP over the entire frequency range is from 0.2 to 4 %. The discovery of continuous CDP spectra allows us to investigate the relaxation processes in wet materials. The results of the measurements of certain materials are given.