Non-contact communication antenna, communication device, and method for manufacturing non-contact communication antenna
First Claim
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1. A non-contact communication antenna, comprising:
- a first antenna pattern on one surface of a base material, and a second antenna pattern on a back surface of the base material,wherein the first antenna pattern includes a first coil section and a first electrode section that includes a first plurality of elongated electrode portions,wherein the second antenna pattern includes a second coil section and a second electrode section that includes a second plurality of elongated electrode portions, wherein, for a first position of the first coil section on the one surface that matches with a second position of the second coil section on the back surface, each of the first plurality of elongated electrode portions of the first electrode section on the one surface is formed to non-overlap each of the second plurality of elongated electrode portions of the second electrode section formed on the back surface, andwherein a change in capacitance of the first electrode section and the second electrode section compensates for a change in capacitance of the first coil section and the second coil section.
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Abstract
There is provided a non-contact communication antenna including a first antenna pattern that is formed on one surface of a base material, and a second antenna pattern that is formed on a back surface of the one surface of the base material. The first antenna pattern includes a first coil section and a first electrode section. The second antenna pattern includes a second coil section and a second electrode section. Capacitance of the first electrode section and the second electrode section compensates a change in capacitance depending on a formation situation of the first coil section and the second coil section.
16 Citations
14 Claims
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1. A non-contact communication antenna, comprising:
- a first antenna pattern on one surface of a base material, and a second antenna pattern on a back surface of the base material,
wherein the first antenna pattern includes a first coil section and a first electrode section that includes a first plurality of elongated electrode portions, wherein the second antenna pattern includes a second coil section and a second electrode section that includes a second plurality of elongated electrode portions, wherein, for a first position of the first coil section on the one surface that matches with a second position of the second coil section on the back surface, each of the first plurality of elongated electrode portions of the first electrode section on the one surface is formed to non-overlap each of the second plurality of elongated electrode portions of the second electrode section formed on the back surface, and wherein a change in capacitance of the first electrode section and the second electrode section compensates for a change in capacitance of the first coil section and the second coil section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- a first antenna pattern on one surface of a base material, and a second antenna pattern on a back surface of the base material,
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11. A communication device, comprising:
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a non-contact communication antenna which comprises; a first antenna pattern on one surface of a base material; and a second antenna pattern on a back surface of the base material, wherein the first antenna pattern includes a first coil section and a first electrode section that includes a first plurality of elongated electrode portions, wherein the second antenna pattern includes a second coil section and a second electrode section that includes a second plurality of elongated electrode portions, wherein, for a first position of the first coil section on the one surface that matches with a second position of the second coil section on the back surface, each of the first plurality of elongated electrode portions of the first electrode section on the one surface is formed to non-overlap each of the second plurality of elongated electrode portions of the second electrode section formed on the back surface, and wherein a change in capacitance of the first electrode section and the second electrode section compensates for a change in capacitance of the first coil section and the second coil section.
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12. A method for manufacturing a non-contact communication antenna, the method comprising:
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forming, on one surface of a base material, a first antenna pattern having a first coil section and a first electrode section that includes a first plurality of elongated electrode portions; and forming, on a back surface of the base material, a second antenna pattern having a second coil section and a second electrode section that includes a second plurality of elongated electrode portions, wherein, for a first position of the first coil section on the one surface that matches with a second position of the second coil section on the back surface, each of the first plurality of elongated electrode portions of the first electrode section on the one surface is formed to non-overlap each of the second plurality of elongated electrode portions of the second electrode section formed on the back surface, and wherein a change in capacitance of the first electrode section and the second electrode section compensates for a change in capacitance of the first coil section and the second coil section. - View Dependent Claims (13, 14)
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Specification