| 摘要 |
Provided is a signal coupling device which suppresses the leakage of magnetic field to the outside from a signal line connecting between a PLC modem and the signal coupling device, thereby reducing the influence of such magnetic field leakage on wireless equipment in the vicinity thereof. The signal coupling device includes: a signal coupling member having a hollow portion through which a power line penetrates; and a signal line covered with an insulating coating, the signal line having a penetrating portion penetrating through the hollow portion, and a first transmission portion and a second transmission portion which connect the opposite ends of the penetrating portion to the modem to thereby transmit a PLC signal. The first transmission portion and the second transmission portion are arranged not coaxially but at a predetermined spacing from each other.
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