Magnetic field antenna
First Claim
Patent Images
1. A magnetic field antenna comprising:
- an earplug body having a distal end and a proximal end;
a magnetic core section within the earplug body;
an antenna coil having at least one turn wrapped at least partially around the magnetic core section;
at least one electrical component within the earplug body and electrically coupled to the antenna coil; and
a magnetic cap at the distal end of the earplug body, the magnetic cap magnetically coupled to the magnetic core.
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Accused Products
Abstract
A magnetic field antenna that provides high efficiency and a compact form factor. Electromagnetic shielding of electrical components used in the antenna is provided, and one embodiment of the invention is a wireless battery-free communications earplug.
68 Citations
21 Claims
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1. A magnetic field antenna comprising:
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an earplug body having a distal end and a proximal end; a magnetic core section within the earplug body; an antenna coil having at least one turn wrapped at least partially around the magnetic core section; at least one electrical component within the earplug body and electrically coupled to the antenna coil; and a magnetic cap at the distal end of the earplug body, the magnetic cap magnetically coupled to the magnetic core. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A magnetic field antenna comprising:
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an earplug body having a distal end and a proximal end; a magnetic core section within the earplug body; an antenna coil having at least one turn wrapped at least partially around the magnetic core section; at least one electrical component within the earplug body and electrically coupled to the antenna coil; and a magnetic shunt within the earplug body, the magnetic shunt magnetically coupled to the magnetic core. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A magnetic field antenna comprising:
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an earplug body having a distal end and a proximal end; a magnetic core section within the earplug body; an antenna coil having at least one turn wrapped at least partially around the magnetic core section; at least one electrical component within the earplug body and electrically coupled to the antenna coil; and a magnetic eartip adapter, the magnetic eartip adapter magnetically coupled to the magnetic core. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification