Patent ID: 7782267

Claim:
An antenna coil comprising: a magnetic core; a substrate wound around the magnetic core; conductors provided on the substrate; a receiver coil arranged around the magnetic core and defined by the conductors, the receiver coil being wound so as to be divided into a first receiver coil portion and a second receiver coil portion with a non-coil-wound portion provided therebetween, the second receiver coil portion having an opposite coil winding direction of coil winding to that of the first receiver coil portion; and a transmitter coil arranged around the magnetic core and defined by the conductors and having a coil axis parallel or substantially parallel to a coil axis of the receiver coil, the transmitter coil being wound so as to be divided into a first transmitter coil portion and a second transmitter coil portion with a non-coil-wound portion therebetween, the second transmitter coil portion having an opposite coil winding direction to that of the first transmitter coil portion; wherein a region in which the receiver coil is provided and a region in which the transmitter coil is provided at least partially overlap each other when viewed in plan view.