{
  "$type": "site.standard.document",
  "description": "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…",
  "path": "/patents/943717",
  "publishedAt": "2016-05-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60L50/16",
    "EQUOS RES CO LTD [JP]"
  ],
  "textContent": "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).",
  "title": "ANTENNA COIL UNIT"
}