| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a mounting system for a printed wiring board in which a radiant noise is small by suppressing the degradation of a resonance phenomenon when a noise current, in a power-supply system, generated by an LSI is propagated to the board. SOLUTION: At least one out of the power-supply layer and the ground layer of the LSI generating a noise on the printed-wiring board is separated in the shape of an island so as to surround the circumference of the LSI. The outside and the inside of the island are coupled electrically by two or more inductors. As a result, it is possible to prevent the noise form being propagated to the outer circumference by using the island and the inductors. When the inductors are formed in a plurality, it is possible to prevent a resonance due to the shape of the island.</p> |
