Wireless IC device and electromagnetic coupling module

摘要

A wireless IC device includes a wireless IC chip, a feeder circuit substrate which is coupled to the wireless IC chip and includes a feeder circuit including an inductance element, and a radiation plate. The inductance element includes a plurality of stacked layers having coil conductors electrically connected, and a coil conductor electrically connected in a middle portion of the inductance element is arranged at an end position in the coil axis direction and faces a coupling portion of the radiation plate.

主权项

1. A module comprising:
a wireless IC; and a feeder circuit including first and second inductance elements each connected to the wireless IC and coupled to a radiation plate; wherein the first inductance element includes a first coil conductor and a second coil conductor connected to the first coil conductor, and the second inductance element includes a third coil conductor and a fourth coil conductor connected to the third coil conductor, the first and third coil conductors being connected to the wireless IC, and an end of the second coil conductor and an end of the fourth coil conductor being electrically connected to each other.