INDUCTOR ELEMENT, COIL ANTENNA, ANTENNA DEVICE, CARD INFORMATION MEDIUM, AND ELECTRONIC DEVICE
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United States of America Patent
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Sep 28, 2017
filing date -
Apr 9, 2015
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Abstract
A coil antenna includes an insulator with a first principal surface and a second principal surface opposing to the first principal surface, a coil conductor provided on or in the insulator, a first pad electrode and a second pad electrode both provided on the first principal surface, and a third pad electrode and a fourth pad electrode both provided on the second principal surface. The coil conductor includes a first end and a second end. The first pad electrode and the third pad electrode are electrically connected to the first end side of the coil conductor, while the second pad electrode and the fourth pad electrode are electrically connected to the second end side of the coil conductor. Thus, the pad electrodes connected to the coil conductor are provided on each of the first principal surface and the second principal surface of the insulator.
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