Antenna device and electronic apparatus
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United States of America Patent
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Aug 29, 2017
Issued Date -
N/A
app pub date -
Aug 21, 2013
filing date -
Aug 23, 2012
priority date (Note) -
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Abstract
Provided is an antenna device that achieves good communication characteristics when incorporated into an electronic apparatus. The antenna device incorporated into an electronic apparatus and configured to communicate with an external device via an electromagnetic field signal comprises: a metal plate serving as a first electric conductor, being provided inside a casing of the electronic apparatus and facing the external device; an antenna substrate provided inside the casing of the electronic apparatus, and having an antenna coil inductively coupled to the external device and wound around thereon; and metal foil serving as a second electric conductor in sheet form, being provided inside the casing of the electronic apparatus, overlapping or being in contact with the metal plate serving as the first electric conductor, and at least partially overlapping a surface of the antenna substrate, the surface being opposite to a surface facing the external device.
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