DUAL-BAND CERAMIC FILTER Russian patent published in 2017 - IPC H01P1/20 

FIELD: radio engineering, communication.

SUBSTANCE: dual-band filter is made in the form of two tuned to the predetermined band passes parallel to the connected in parallel branches in the form of the circuits, consisting of separate coaxial resonators, connected through the holes in the common walls with shortening capacities in the form of the ceramic plates. The parallel connection of the dual-band filter branches with the coplanar or microstrip line is provided by the topology of the input and output coupler, made as the coplanar lines sections on the side faces of filter branches input and output resonators, and having the common part after joining the filter branches along the adjacent side faces.

EFFECT: increase of the transmission speed.

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