In order to suppress a noise component such as a harmonic component of the fundamental component of an electromagnetic wave produced by an electric current flowing through a main coil that functions as an antenna while minimizing the attenuation of the fundamental component, this antenna coil unit includes a main coil (41) and an auxiliary coil (42) electrically insulated from the main coil (41), the auxiliary coil (42) being arranged at a position in which an induction current is produced by a magnetic field produced by an electric current flowing through the main coil (41). The auxiliary coil (42) is configured in a state in which a frequency deviating by a predefined amount in a predefined direction from a target frequency predefined within a harmonic component of the fundamental component of an electromagnetic wave produced by the electric current flowing through the main coil (41) is taken as a resonance frequency. The direction and amount are such that the phase of an alternating-current (AC) current flowing through the auxiliary coil (42) is in an opposite-phase state, which is opposite the phase of the harmonic component of an AC current flowing through the main coil (41).
ANTENNA COIL UNIT
ANTENNENSPULENEINHEIT
UNITÉ DE BOBINE D'ANTENNE
01.03.2017
Patent
Elektronische Ressource
Englisch
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01F MAGNETS , Magnete |