| 摘要 |
PROBLEM TO BE SOLVED: To extract a communication signal from supply power independently of the supply power and superimpose a communication signal independently of the supply power, in a contactless feeding system for supplying power from a feeding apparatus to a charging apparatus mounted on a vehicle in a contactless manner.SOLUTION: A coupling circuit 10 includes: a filter circuit 31 in which a coil 34 and a capacitor 35 connected in parallel with a communication section 9 and with a contactless feeding coil 12 have an inductance and a capacitance set such that a resonance frequency set by the coil 34 and the capacitor 35 matches the frequency of supply power; and filter circuits 32, 33 in each of which a coil 36 and a capacitor 37 connected in series with the communication section 9 and with the contactless feeding coil 12 have an inductance and a capacitance set such that a resonance frequency set by the coil 36 and the capacitor 37 matches the frequency of a communication signal. |
