MONOLITHIC STRIP FILTER Russian patent published in 2023 - IPC H01P1/203 

FIELD: radio technology; filters.

SUBSTANCE: monolithic strip filter is made using the technology of multilayer printed circuit boards by pressing dielectric substrates. The strip conductors of the resonators are made with two layers, and the prepreg connecting them is located between these layers. The two-layer strip conductors of the resonators are closed by adjacent ends on one side to the screen, and on the other side are open. In the layer of outer metallization of the filter deposited on the outer surfaces of the filter and acting as a screen, through holes are made, and they are located above the places where the strip conductors of the resonators are connected to the screen. The area of each hole is in the range from w² to 16 w² mm², where w is the width of the strip conductor at the location of the hole, mm.

EFFECT: increase in the repeatability of the characteristics of monolithic strip filters manufactured using the technology of multilayer printed circuit boards.

1 cl, 8 dwg