Patent ID: 8314743
Filing Date: 2012-11-20
Classification: H01Q

Abstract:
1. A portable electronic device comprising: a circuit board having a longitudinal direction and a width direction perpendicular to the longitudinal direction, the circuit board having a length along the longitudinal direction that is greater than a width along the width direction; and an antenna coil provided on the circuit board, the antenna coil including: wherein the first coil portion and the second coil portion are connected to each other by a conductor, wherein a winding direction of the first coil portion differs from a winding direction of the second coil portion, wherein the first magnetic core and the second magnetic core are juxtaposed relative to each other such that an axis of the first coil portion and an axis of the second coil portion correspond to each other and so that a gap is provided between the first magnetic core and the second magnetic core, wherein a length X of the antenna coil in an axial direction and a distance Y between two intersecting points at which a virtual line formed by projecting a central line of the antenna coil in the axial direction onto the circuit board intersects an outer periphery of the circuit board, satisfies Y≧X≧0.8Y, and wherein the axial direction of the antenna coil substantially corresponds to the width direction of the circuit board.