| 摘要 |
PROBLEM TO BE SOLVED: To provide a printed-circuit board capable of reducing in a size of an EBG structure which can prevent a high frequency noise generated in the other digital circuit from being mixed into an analog circuit and electromagnetic interference generated at an external device from being flowed out in a mixed circuit of a digital circuit and the analog circuit and which has a power supply layer having such a structure, and a manufacturing method thereof.SOLUTION: In a printed-circuit board in which a power supply path is arranged onto an insulation layer between a digital circuit 2 and an analog circuit 3, one of the printed-circuit board is connected to the power supply path, the other is an open stub in an opening state, and an open stub EBG structure 4 in a plurality of the open stub states is arranged to an edge of a bridge part of a power source plane.SELECTED DRAWING: Figure 2 |
