Method and apparatus for inductive coupling utilizing an amorphous metal barrier

摘要

A near-field magnetic induction system includes a metallic structure, an amorphous metal barrier and a near-field magnetic induction device. The device includes an antenna coupled to the amorphous metal barrier and a circuit electrically coupled to the antenna. In use, the antenna is separated from the metallic structure by the amorphous metal barrier. The amorphous metal barrier may be integrated with the near-field magnetic induction device or with the metallic structure. Inductive coupling with the near-field magnetic induction device may be used, for example, in communication or energy transfer applications such as RFID tags and inductive chargers.

主权项

1. An apparatus, comprising:
a metallic casing within which is mounted an electronic device operable in response to an external magnetic field; and an amorphous metal barrier located on an exterior surface of the metal casing and configured to reduce energy transfer from said external magnetic field to said metallic casing; wherein the electronic device comprises a near field magnetic induction device attached to the amorphous metal barrier, the near field magnetic induction device having an antenna and an electrical circuit responsive to a current induced in the antenna by the external magnetic field.