To suppress noise components such as harmonic components of the fundamental component of an electromagnetic wave generated by a current flowing in a main coil functioning as an antenna, while suppressing attenuation of the fundamental wave component.An antenna coil unit comprises a main coil 41 and an auxiliary coil 42 which is insulated from the main coil 41 in an electric circuit manner and disposed at a position where an induction current is generated in the auxiliary coil by a magnetic field which is generated by a current flowing in the main coil 41. The auxiliary coil 42 is configured in such a way that a frequency deviated from a prescribed target frequency in harmonic components with respect to the fundamental component of an electromagnetic wave generated by the current flowing in the main coil 41 in a prescribed deviation direction just by a prescribed deviation amount, becomes a resonant frequency of the auxiliary coil. The deviation direction and the deviation amount are set in such a way that a phase of an AC current flowing in the auxiliary coil 42 is inverse to a phase of the harmonic component of an AC current flowing in the main coil 41.


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    Title :

    ANTENNA COIL UNIT


    Contributors:

    Publication date :

    2015-05-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01F MAGNETS , Magnete / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung



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