Magnetic antenna, board mounted with the same, and RF tag

摘要

The present invention relates to a magnetic antenna for information communication using a magnetic field component which is capable of satisfying both reduction in size and improvement in communication sensitivity. The magnetic antenna of the present invention is used for transmitting and receiving information using an electromagnetic induction method, and comprises a central core formed of a magnetic material and a non-magnetic material, a coil-shaped electrode material wound around the core, and an insulating layer formed on at least one outside surface of the core on which the coil-shaped electrode material is provided, in which the magnetic material is separated into two or more parts through the non-magnetic material when viewed in a section of the core which is perpendicular to a magnetic flux passing therethrough.

主权项

1. A magnetic antenna for transmitting and receiving information using an electromagnetic induction method, comprising a central core formed of a magnetic material and a non-magnetic material, a coil-shaped electrode material disposed outside of and wound around the magnetic material and the non-magnetic material of the central core, and an insulating layer formed on at least one outside surface of the core on which the coil-shaped electrode material is provided, in which the magnetic material is separated into two or more parts through the non-magnetic material when viewed in a section of the core which is perpendicular to a magnetic flux passing therethrough, wherein the coil-shaped electrode material is oriented relative to the magnetic material and the non-magnetic material such that each coil of the electrode material is concurrently wound around both the magnetic material and the non-magnetic material.