| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an antenna which can sufficiently perform communication even if a communication object such as a non-contact IC card is positioned just above the antenna or just beside the antenna and to provide an antenna device and a communication apparatus. <P>SOLUTION: An antenna 1 is arranged close to one end of a metal body 6 and a face including one end. The antenna 1 includes: a core 3; and a coil portion 2 where a conductor is wound to the core. One end of the core is arranged inside and outside in a coil axial direction A of the coil portion from one end of the metal body within a range of a prescribed distance d from one end of the metal body. Thus, at least a part of the antenna is arranged close to one end of the metal body and the face including one end. A boundary axis between a magnetic field line in a direction detached from the antenna and a magnetic field line in a direction toward the antenna on communication is inclined to a direction detached from the metal body. <P>COPYRIGHT: (C)2012,JPO&INPIT |
