Patent ID: 9543642
Date: 2017-01-10
CPC Classifications: G06K,H01Q

Claim:
1. An antenna device comprising: an antenna element including a coupling portion; and a feed element including a first coil conductor and a second coil conductor, the first coil conductor and the second coil conductor being arranged such that magnetic flux generated in the first coil conductor and the second coil conductor constitutes a closed magnetic circuit; wherein the feed element and the antenna element are arranged such that the closed magnetic circuit of the feed element extends around the coupling portion of the antenna element; the antenna element includes a spiral or loop-shaped coil conductor; the coupling portion is part of the spiral or loop-shaped coil conductor; and the feed element is disposed across the coupling portion of the antenna element such that the first coil conductor and the second coil conductor are positioned on respective sides of the coupling portion.