Near-field electromagnetic induction (NFEMI) antenna
First Claim
1. A near-field electromagnetic induction (NFEMI) antenna, comprising:
- a core;
an electric antenna including an electrically conductive surface;
a magnetic antenna including a first coil coupled to a second coil;
a first feeding connection coupled to one end of the first coil;
a second feeding connection coupled to another end of the first coil and coupled to one end of the second coil, wherein the first and second feeding connections are configured to be coupled to an electrical apparatus and another end of the second coil is coupled to the electrically conductive surface; and
a magnetic permeable material between a first side of the magnetic antenna and the core, wherein the first coil and the second coil are wrapped around the magnetic permeable material in an interleaved pattern.
1 Assignment
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Accused Products
Abstract
One example discloses a near-field electromagnetic induction (NFEMI) antenna, having: a core; an electric antenna including an electrically conductive surface; a magnetic antenna including a first coil coupled to a second coil; a first feeding connection coupled to one end of the first coil; a second feeding connection coupled to another end of the first coil and coupled to one end of the second coil; wherein the first and second feeding connections are configured to be coupled to an electrical apparatus; wherein another end of the second coil is coupled to the electrically conductive surface; a magnetic permeable material between a first side of the magnetic antenna and the core; and wherein the first coil, the second coil, the magnetic permeable material, and the electrically conductive surface are wrapped around the core.
20 Citations
18 Claims
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1. A near-field electromagnetic induction (NFEMI) antenna, comprising:
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a core; an electric antenna including an electrically conductive surface; a magnetic antenna including a first coil coupled to a second coil; a first feeding connection coupled to one end of the first coil; a second feeding connection coupled to another end of the first coil and coupled to one end of the second coil, wherein the first and second feeding connections are configured to be coupled to an electrical apparatus and another end of the second coil is coupled to the electrically conductive surface; and a magnetic permeable material between a first side of the magnetic antenna and the core, wherein the first coil and the second coil are wrapped around the magnetic permeable material in an interleaved pattern. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A wearable device comprising a near-field electromagnetic induction (NFEMI) antenna including:
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a core; an electric antenna including an electrically conductive surface; a magnetic antenna including a first coil coupled to a second coil; a first feeding connection coupled to one end of the first coil; a second feeding connection coupled to another end of the first coil and coupled to one end of the second coil, wherein the first and second feeding connections are configured to be coupled to an electrical apparatus and another end of the second coil is coupled to the electrically conductive surface; and a magnetic permeable material between a first side of the magnetic antenna and the core; and
wherein the first coil and the second coil are wrapped around the magnetic permeable material in an interleaved pattern, and the wearable device is at least one of;
a radio system, a wireless device, a hearing aid, or an earbud.
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Specification