| 摘要 |
PURPOSE:To make it possible to cross strip lines and a bridging line each other without causing interference of mutual wave signals by connecting an earth line on an insulating sheet to an earth pattern provided on a face of a substrate via another earth pattern provided on the other face of the substrate. CONSTITUTION:A bridging line 4 for connecting strip lines 2, 3 is provided together with an earth lines 8 on an insulating sheet 7 for forming a coplanar type line, the earth line 8 being provided parallel to the bridging line 4. The electric field of those wave signals which pass through the bridging line 4 is therefore caused to flow through the earth line 8 on the insulating sheet 7 and is guided into an earth pattern 9 provided on a face of a substrate 1 via another earth pattern 9 provided on the other face of the substrate 1 which is connected to the earth line. The electric field from the bridging line 4 can thus be prevented from interfering with that from the other strip lines 2, 3 provided beneath the bridging line 4. |
