Patent ID: 9509051
Filing Date: 2016-11-29
CPC Classification: H01Q,H05K

Claim Text:
1. An antenna device comprising: a multilayer substrate including a plurality of dielectric or magnetic sheets stacked on each other in a stacking direction; a coil conductor including a coil winding axis perpendicular or substantially perpendicular to the stacking direction, a first principal surface, a second principal surface, a first side surface parallel or substantially parallel to the coil winding axis, and a second side surface parallel or substantially parallel to the coil winding axis; a first ground conductor opposite to the first principal surface and arranged outside the coil conductor; a second ground conductor opposite to the second principal surface and arranged outside the coil conductor; and an interlayer connection conductor configured to electrically connect the first ground conductor and the second ground conductor to each other; wherein the interlayer connection conductor is arranged only near or adjacent to the first side surface.