Patent 10079621 was granted and assigned to Samsung on September, 2018 by the United States Patent and Trademark Office.
An antenna device is provided. The antenna device includes contact terminals including a first contact terminal and a second contact terminal, sub-coil antennas each including at least one loop, and a switch configured to selectively connect sub-coil antennas to the first contact terminal and the second contact terminal according to a control signal input through the first contact terminal and the second contact terminal.