Antenna device and ic card provided therewith

An IC card comprising:

• an antenna device comprising:
• a substrate having a first surface and a second surface opposite to the first surface;
• a coil pattern provided on the first surface of the substrate;
• a capacitor electrode pattern provided on the first surface of the substrate and connected to an innermost turn of the coil pattern;
• and
• a magnetic body overlapping the capacitor electrode pattern and at least a part of the coil pattern;
• a metal plate that covers the magnetic body from an opposite side of the substrate;
• and
• an IC module,
• wherein the magnetic body has a through hole therein,
• wherein the metal plate has a through hole therein in which the IC module is disposed,
• wherein the through hole of the metal plate overlaps the through hole of the magnetic body,
• wherein the coil pattern includes a first coil pattern,
• wherein the first coil pattern includes:
• a first winding part wound along an outer edge of the substrate so as to overlap the magnetic body;
• and
• a second winding part whose turns are connected to respective turns of the first winding part and wound along an inner edge of the through hole in an opposite direction to the first winding part,
• wherein the capacitor electrode pattern includes a plurality of linear patterns extending in parallel to one another,
• wherein no other conductor pattern that faces the capacitor electrode pattern through an insulating material is provided between the capacitor electrode pattern and the magnetic body, and
• wherein no other conductor pattern is provided at a position on the second surface of the substrate that overlaps the capacitor electrode pattern.