| 摘要 |
PROBLEM TO BE SOLVED: To provide a wiring board capable of transmitting high frequency signals transmitted into a signal line at low loss. SOLUTION: A wiring board comprises: a strip-shaped signal line 1; ground or power-source conductive layers 3 disposed above and below the signal line 1 with insulating layers 2 interposed therebetween; and rows of through conductors 4 that are aligned along the signal line 1 at the both sides of the signal line 1 and connect the upper and lower ground or power-source conductive layers 3 to each other. Slits 6 extending along the signal line 1 are formed between regions of the upper and lower ground or power-source conductive layers 3 facing the signal line 1 and the rows of the through conductors 4. The electromagnetic coupling of the return path formed according to signals transmitted into the signal line 1 concentrates in the regions sandwiched between the slits 6 in the ground or power-source conductive layers 3, which enables the transmission of high frequency signals transmitted into the signal line 1 at low loss. COPYRIGHT: (C)2012,JPO&INPIT |
