ANTENNA SUBSTRATE FOR NON-CONTACT COMMUNICATION APPARATUS AND NON-CONTACT COMMUNICATION APPARATUS
First Claim
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1. An antenna substrate for a non-contact communication apparatus, the antenna substrate comprising:
- a support substrate; and
an antenna coil, provided on or inside of the support substrate, having a first opening and an auxiliary coil, the auxiliary coil having a second opening which has an opening area smaller than that of the first opening,wherein the auxiliary coil is insulated and isolated from the antenna coil, and arranged so that the second opening is opposed to a part of the first opening when viewed from a direction orthogonal to a surface of the support substrate.
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Abstract
An antenna substrate for a non-contact communication apparatus includes a support substrate and an antenna coil provided on or inside of the support substrate. The antenna coil has a first opening and an auxiliary coil. The auxiliary coil has a second opening which has an opening area smaller than the first opening. The auxiliary coil is insulated and isolated from the antenna coil, and arranged so that the second opening is opposed to a part of the first opening when viewed from a direction orthogonal to a surface of the support substrate.
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Citations
6 Claims
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1. An antenna substrate for a non-contact communication apparatus, the antenna substrate comprising:
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a support substrate; and an antenna coil, provided on or inside of the support substrate, having a first opening and an auxiliary coil, the auxiliary coil having a second opening which has an opening area smaller than that of the first opening, wherein the auxiliary coil is insulated and isolated from the antenna coil, and arranged so that the second opening is opposed to a part of the first opening when viewed from a direction orthogonal to a surface of the support substrate. - View Dependent Claims (2, 3, 4, 5)
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6. A non-contact communication apparatus comprising:
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an antenna substrate; and a drive circuit, wherein the antenna substrate includes; a support substrate; and an antenna coil, provided on or inside of the support substrate, having a first opening and an auxiliary coil, the auxiliary coil having a second opening which has an opening area smaller than the first opening, wherein the auxiliary coil is insulated and isolated from the antenna coil, and arranged so that the second opening is opposed to a part of the first opening when viewed from a direction orthogonal to a surface of the support substrate, and wherein the drive circuit applies a predetermined signal to the antenna coil.
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Specification