BAND-PASS FILTER Russian patent published in 2025 - IPC H01P1/203 

FIELD: electricity.

SUBSTANCE: invention relates to microstrip band-pass filters. Band-pass filter containing a dielectric plate with metallized surfaces, along the edges of which two rows of vertical metal cylindrical pins are installed into the holes, limiting the electromagnetic wave propagation area, resonators are formed by pairs of metal pins of the same diameter arranged symmetrically about the longitudinal axis of the plate, and at the ends of the filter there are microstrip microwave inputs which are matched with a waveguide integrated into the substrate. At that, dielectric plate is made of glued in stack layers of photo paper for printer of equal thickness, wherein dielectric permittivity of one layer ε = 2.8-3.2 and tangent of angle of dielectric losses tgδ = 0.0001-0.0015.

EFFECT: reduction of overall dimensions of a filter in a bent form by 3_4 times, which makes it possible to arrange the filter on one board with other elements.

8 cl, 5 dwg