Antenna coil, resonant antenna having antenna coil, and card type wireless device having resonant antenna
First Claim
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1. An antenna coil comprising:
- an air-core type flat coil body having a ring shape; and
a coil case having a ring shape corresponding to the ring shape of the coil body, wherein the coil case includes a coil accommodation space for accommodating the coil body, the coil accommodation space is disposed in a circumferential direction of the ring shape of the coil case, the coil body includes a plurality of unit coils, each of which has a same winding direction and a same number of turns, and the unit coils are connected in parallel each other.
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Abstract
An antenna coil includes: an air-core type flat coil body having a ring shape; and a coil case having a ring shape corresponding to the ring shape of the coil body. The coil case includes a coil accommodation space for accommodating the coil body. The coil accommodation space is disposed in a circumferential direction of the ring shape of the coil case. The coil body includes a plurality of unit coils, each of which has a same winding direction and a same number of turns. The unit coils are connected in parallel each other.
27 Citations
12 Claims
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1. An antenna coil comprising:
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an air-core type flat coil body having a ring shape; and
a coil case having a ring shape corresponding to the ring shape of the coil body, wherein the coil case includes a coil accommodation space for accommodating the coil body, the coil accommodation space is disposed in a circumferential direction of the ring shape of the coil case, the coil body includes a plurality of unit coils, each of which has a same winding direction and a same number of turns, and the unit coils are connected in parallel each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification