| 摘要 |
PROBLEM TO BE SOLVED: To improve transmission line signal quality by shortening the length of a transmission line that connects a connector disposed on one surface of a circuit board and a connector disposed on the other surface. SOLUTION: The circuit board includes: a connector 51 disposed on a surface 41; a connector 52 disposed on a position of the underside 42 opposite to the connector 51; a connector mounting pattern 53 for soldering the connector 51 to the surface 41; and a connector mounting pattern 54 for soldering the connector 52. A through hole 55 is formed on the ends of the connector mounting patterns 53, 54, and the connector mounting patterns 53, 54 are electrically connected. COPYRIGHT: (C)2009,JPO&INPIT
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