Abstract: A method and a device for measuring dielectric characteristics by generating a microwave signal, dividing the signal into reference and sounding signals, irradiating a body with the microwave signal, receiving the reflected, reference and total signals and in detecting said signals. The irradiation is carried out by a waveguide wave, the wave number of which in the free space filled with dielectric, is selected within a range from 1.0 to 1.07 the propagation number of the waveguide wave.

Abstract: The inventive method for measuring dielectric characteristics of material bodies consists in generating a microwave signal, in dividing said signal into reference and sounding signals, in irradiating a body with the microwave signal when a waveguide probe contacts a tested material, in receiving the reflected, reference and total signals and in detecting said signals. The irradiation is carried out by means of a waveguide wave, the propagation number of which in the free space of the waveguide probe, which is filled with a prism-shaped dielectric insert,—“[?k2]0.5” is selected within a range from 1.0 to 1.07 the propagation number of the waveguide wave “[?k2?(m?/b)2+(n?/a)2]0.