UHF STRIP-LINE FILTER WITH SUPPRESSION OF PARASITIC PASS-BANDS Russian patent published in 2015 - IPC H01H1/00 

FIELD: radio engineering, communication.

SUBSTANCE: strip-line filter contains a dielectric substrate based on multilayered material which contains the quarter wave filter resonators and resonant structure formed by sections of strip lines in one eighth of the wavelength at the central frequency of the pass-band. Sections of strip lines are located above the gaps between the quarter wave resonators. The named strip lines form the resonator, suppressing parasitic pass-bands. External surfaces of the filter have conducting coating.

EFFECT: reduction of geometrical dimensions of the filter.

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