27-03-2014 дата публикации
Номер: US20140083756A1
The invention relates to 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. 1. A multi-level circuit board for high-frequency applicationswith at least one first carrier substrate (PCB1) made of a first material suitable for high frequencies, andwith at least one second carrier substrate (PCB2,3) made of a second material, which second material has higher dielectric losses than the first material,{'b': 1', '1', '2', '2, 'as well as with at least one signal line structure (S, C) provided on the first carrier substrate (PCB1) and with at least one ground layer (M) connected to electric ground potential, said at least one ground layer (M) being provided on a side of at least one second carrier substrate (PCB2, PCB3),'}{'b': 2', '4', '3', '2', '4', '3', '1', '1', '3, '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, M) in that a metallization surface (C) 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, M) and the metallization surface (C) is connected to the signal line structure (C) by means of a via (V(C-C)).'}2. The multi-level circuit board according to claim 1 , characterized in thata first ground layer is provided between the first carrier substrate (PCB1) and the second carrier substrate (PCB2) s and a third carrier substrate (PCB3), which is also made of the second material, is arranged at the second carrier substrate (PCB2),{'b': '3', 'wherein the metallization ...
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