| 摘要 |
<p>PROBLEM TO BE SOLVED: To make an area of a printed circuit board small when an LC resonance type filter capable of reducing a common mode component, which is generated when a differential signal is transmitted, is formed by conductors of a printed wiring board.SOLUTION: Signal conductor patterns 211, 212 are disposed at a conductor layer 201 and a ground conductor pattern 213 is disposed at a conductor layer 203. A conductor pattern 221 is disposed at a conductor layer 202 and a conductor pattern 222 is disposed at a conductor layer 204. The signal conductor pattern 211 and the conductor pattern 221 are connected by a via conductor 231 and the signal conductor pattern 212 and the conductor pattern 222 are connected by a via conductor 232. At least parts of the conductor patterns 221, 222 overlap with the ground conductor pattern 213 when viewed in a Z direction. Further, at least parts of the conductor patterns 221, 222 overlap with each other.</p> |
