PROBE FOR MEASURING DIELECTRIC CONSTANT OF DIELECTRIC PLATES USING MICROWAVE SPECTROSCOPY Russian patent published in 2023 - IPC G01R1/67 

FIELD: measurement equipment.

SUBSTANCE: measuring the dielectric constant and dielectric loss tangent of dielectric plates. The measuring probe is made in the form of a quarter-wave resonator, which is a section of a coaxial transmission line, consisting of hollow metal cylinder 1 with internal radius R₁, acting as a screen, and an internal core in the form of metal cylinder 2. One of the ends of the coaxial resonator is short-circuited 3, the second is open 4. The design contains ports for input/output of ultra-high-frequency signals 5. Inside the resonator, there is a spatially periodic structure formed by metal disks 6 with a hole in the centre, having an outer radius equal to R₁ and hole radius R₂ exceeding the radius of the central core. During measurement, the open end and the central core of the coaxial resonator touch the dielectric sample of plate 7, which, in a particular case, can be metallized on reverse side 8.

EFFECT: reduction in the operating frequency of the measuring probe while maintaining the same dimensions.

1 cl, 4 dwg