Patent ID: 8878074

Claim:
A multi-level circuit board for high-frequency applications with at least one first carrier substrate (PCB1) made of a first material suitable for high frequencies, and with at least one second carrier substrate (PCB2,3) made of a second material, which second material has higher dielectric losses than the first material, as well as with at least one signal line structure (S 1 , C 1 ) provided on the first carrier substrate (PCB1) and with at least one ground layer (M 2 ) connected to electric ground potential, said at least one ground layer (M 2 ) being provided on a side of at least one second carrier substrate (PCB2, PCB3), as well as with electrical vias (V) extending through the carrier substrates (PCB1,2,3), characterized in that a capacitance for removing high-frequency power to ground potential is formed through the at least one second carrier substrate (PCB2, PCB3) toward the ground layer (M 2 , M 4 ) in that a metallization surface (C 3 ) having a size corresponding to the desired capacitance is formed on that side of the second carrier substrate (PCB2,4) which is opposite the ground layer (M 2 , M 4 ) and the metallization surface (C 3 ) is connected to the signal line structure (C 1 ) by means of a via (V(C 1 -C 3 )).