| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna for a power transmission system, which does not heat the bottom part of a vehicle and is capable of improving transmission efficiency.SOLUTION: The antenna of the present invention includes: a main coil formed of a conductor wire wound around a first axis; a plurality of sub-coils formed of the conductor wire wound around a plurality of second axes included in a plane having the first axis as a normal; a base material 300 on which the conductor wire constituting the main coil and the sub-coils is wound; magnetic cores 350 each disposed on the inner peripheral side of the conductor wire constituting the sub-coils; and projecting pieces 330 for shaping the sub-coils, which extend from a base part 310 to edge parts of the base material 300 and to which the magnetic cores 350 are attached and around which the conductor wire is wound. The length of the magnetic cores 350 is longer than that of the projecting pieces 330 for shaping the sub-coils. |
