Patent ID: 9219379
Filing Date: 2015-12-22
Classification: G01V,H01F,H02J,H04B

Abstract:
1. An electronic apparatus comprising: a magnetic material layer between a substrate and an antenna pattern layer; windings of a coil within said antenna pattern layer; a plurality of positive electrodes and a plurality of negative electrodes disposed on said substrate to penetrate said magnetic material layer and said antenna pattern layer, wherein said windings surround said plurality of positive electrodes; wherein said electronic apparatus is charged from a power feeding apparatus based on a pairing of said coil and a coil of said power feeding apparatus; wherein presence of a foreign object disposed between the electronic apparatus and said power feeding apparatus is determined based on a change of at least one of an impedance, a current and a voltage developed across a positive electrode of said plurality of positive electrodes and a negative electrode of said plurality of negative electrodes corresponding to a voltage applied between said positive electrode and said negative electrode.