Patent ID: 9742066
Date: 2017-08-22
CPC Classifications: G06K,H01Q

Claim:
1. An antenna device comprising: an antenna coil including a flat conductor adjacent to the antenna coil, wherein a first region including the first conductor portions of the coil conductor does not overlap a second region including the second conductor portions of the coil conductor in a plan view of the magnetic core when viewed in a direction perpendicular to the first main surface of the magnetic core, the first conductor portions being adjacent to the first main surface of the magnetic core, the second conductor portions being adjacent to the second main surface of the magnetic core, the coil conductor is wound such that the first conductor portions and the second conductor portions are alternately connected one by one to form respective loops, a gap is provided between the first conductor portions and the flat conductor in a direction normal to a plane where the flat conductor extends, the first main surface of the magnetic core faces a part of the flat conductor in the direction normal to the plane where the flat conductor extends, the part being closer to one end portion of the flat conductor than to another end portion opposite to the one end portion, and the antenna device is a HF band antenna.