Near field communication antenna and smartphone having same antenna

A smartphone comprising:

• a housing;
• and
• a near field communication (NFC) antenna housed in the housing,
• wherein the housing comprises a rear cover defining a backside of the smartphone,
• wherein the rear cover comprises:
• an electrically conductive first metal plate portion,
• an electrically conductive second metal plate portion spaced apart from the first metal plate portion, and
• an electrically non-conductive cover portion disposed between the first metal plate portion and the second metal plate portion,
• wherein the first metal plate portion comprises a first edge and the second metal plate portion comprises a second edge facing the first edge, and the electrically non-conductive cover portion connects the first edge and the second edge,
• wherein the NFC antenna comprises:
• a plate-shaped magnetic core, and
• an antenna coil having a wire wound multiple times in a loop shape,
• wherein the magnetic core comprises a first surface, a second surface facing opposite the first surface, and one side surface connecting the first surface and the second surface,
• wherein the antenna coil comprises a first portion placed over the first surface of the magnetic core, a second portion placed over the second surface of the magnetic core, and a connection portion placed over the side surface of the magnetic core and connecting the first portion and the second portion, wherein the first portion, the second portion, and the connection portion are joined to form a loop, and
• wherein the first portion comprises a first longitudinal linear section extending along a longitudinal direction parallel to the side surface of the magnetic core, wherein the first longitudinal linear section comprises a plurality of lines extending along the longitudinal direction and arranged parallel to one another, and at least part of the lines of the first longitudinal linear section do not overlap with the magnetic core when viewed in a direction perpendicular to the backside of the smartphone,
• wherein the NFC antenna is disposed such that the first surface of the magnetic core faces the rear cover, and
• wherein when viewed in the direction perpendicular to the backside of the smartphone, at least part of the lines of the first longitudinal linear section are disposed between the first edge and the second edge so that they do not overlap with the first metal plate portion or the second metal plate portion.