Patent ID: 9722313
Date: 2017-08-01
CPC Classifications: G06K,H01Q

Claim:
1. An antenna device that is used in an electronic equipment and that is configured to communicate with external equipment through an electromagnetic signal, the antenna device comprising: an antenna substrate which is arranged on an inner surface of a housing member constituting a housing of the electronic equipment and around which an antenna coil, which is configured to be inductively coupled to the external equipment, is wound; a conductive body in the form of a sheet that is arranged on the antenna substrate to be superposed on a portion of the antenna coil; and a magnetic sheet that is arranged to be superposed on at least a portion of the antenna coil and that is configured to attract a magnetic field emitted from the external equipment to the antenna coil, wherein on a first side of the antenna coil in which a current flowing through wiring of the antenna coil is carried in one direction, the antenna coil is closer to the external equipment than the magnetic sheet is, and/or, on a second side of the antenna coil in which the current flowing through the wiring of the antenna coil is carried in another direction that is opposite to the one direction, the magnetic sheet is closer to the external equipment than the antenna coil and the conductive body are, the conductive body is superposed only on the second side of the antenna coil, and the first side of the antenna coil is located on the peripheral side in the housing member, and the second side of the antenna coil is located on the central side in the housing member.