Patent ID: 8031035

Claim:
A circuit comprising: structured metallization levels separated by ceramic layers in a ceramic multilayer construction; a filter circuit comprising integrated circuit components disposed in the structured metallization levels, wherein the filter circuit comprises conductor segments, grounding surfaces, vias through at least one ceramic layer each, and capacitative couplings; and three resonators designed as strip lines arranged in parallel to each other in the multilayer construction, the resonators being capacitatively and/or magnetically coupled to each other so that they span a passband; wherein each of the resonators comprises a first metallization stripe and a second metallization stripe that are parallel to each and arranged in the same metallization level; wherein each resonator comprises a third metallization strip arranged above or below the first and the second metallization strips in an adjacent metallization level; and wherein all metallization strips of each resonator are connected to each other at least one end.