Antenna apparatus and module apparatus
First Claim
1. An antenna apparatus, comprising:
- a first antenna configured to;
cause a first inductive current to flow based on electromagnetic induction with an external reader/writer, andgenerate a magnetic field based on the flow of the first inductive current; and
a module unit that includes;
a second antenna electromagnetically coupled with the first antenna,wherein an opening area of the second antenna is smaller than an opening area of the first antenna; and
a module which is operated based on a second inductive current generated by the second antenna through the electromagnetic coupling between the first antenna and the second antenna,wherein the module unit is attachable to and removable from the first antenna.
1 Assignment
0 Petitions
Accused Products
Abstract
[Object] To provide an antenna apparatus which can allow a user to freely select service which utilizes the electromagnetic field communication technology. [Solution] Provided is an antenna apparatus including: a first antenna configured to generate a magnetic field by flow of a current; and a module unit including a second antenna whose opening area is smaller than an opening area of the first antenna and which is able to be electromagnetically coupled with the first antenna, and a module configured to operate by a current generated by the second antenna through electromagnetic coupling between the first antenna and the second antenna. The module unit is able to be attached to and removed from the first antenna.
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Citations
18 Claims
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1. An antenna apparatus, comprising:
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a first antenna configured to; cause a first inductive current to flow based on electromagnetic induction with an external reader/writer, and generate a magnetic field based on the flow of the first inductive current; and a module unit that includes; a second antenna electromagnetically coupled with the first antenna, wherein an opening area of the second antenna is smaller than an opening area of the first antenna; and a module which is operated based on a second inductive current generated by the second antenna through the electromagnetic coupling between the first antenna and the second antenna, wherein the module unit is attachable to and removable from the first antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An antenna apparatus, comprising:
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a first antenna configured to; cause a first inductive current to flow based on electromagnetic induction with an external reader/writer, and generate a magnetic field based on the flow of the first inductive current; and a module unit that includes; a second antenna electromagnetically coupled with the first antenna, wherein an opening area of the second antenna is smaller than an opening area of the first antenna; and a module which is operated based on a second inductive current generated by the second antenna through the electromagnetic coupling between the first antenna and the second antenna, wherein the opening area of the second antenna is configured to allow the magnetic field generated by the first antenna to pass. - View Dependent Claims (17)
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18. A module apparatus, comprising:
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a first antenna which has a first opening area smaller than a second opening area of a second antenna, wherein the second antenna is configured to; cause a first inductive current to flow based on electromagnetic induction with an external reader/writer, and generate a magnetic field based on the flow of the first inductive current, and the first antenna is electromagnetically coupled with the second antenna, the module apparatus is configured to operate based on a second inductive current generated by the first antenna through the electromagnetic coupling with the second antenna, and the module apparatus is attachable to and removable from the second antenna.
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Specification