DEVICE FOR ALIGNMENT OF AMPLITUDE-FREQUENCY CHARACTERISTIC OF MICROWAVE PATH Russian patent published in 2020 - IPC H01P3/00 

FIELD: radio equipment and communications.

SUBSTANCE: invention relates to the field of radio equipment. Apparatus for leveling the amplitude-frequency characteristic of the microwave path includes a central path and coaxial resonators tuned to different frequencies within the pass band. Central path is an air coaxial line in a given band of operating wavelengths from λ1 to λ2, located in metal housing, wherein core diameter d and outer diameter D of central path are selected such that ratio is satisfied, where is critical wavelength of occurrence of wave of type H₁₁. At least one coaxial quarter-wave resonator is made perpendicular to the coaxial line in the housing in the form of a cylindrical hole with diameter D_p, wherein each resonator has three adjustment elements, first element with diameter d_p, adjusting gap with central core, is central conductor of coaxial resonator, wherein ratio is satisfied, and two others in body holes made perpendicular to coaxial resonator, wherein first element is closer to end of resonator, and second is closer to its beginning, each element is made with possibility of movement inside hole.

EFFECT: fast adjustment of resonators and high accuracy of AFC alignment.

6 cl, 2 dwg