Antenna arrangement for inductive power transmission and use of the antenna arrangement
First Claim
1. An antenna arrangement comprising an elongated magnet core and a cylindrical coil wound around the core, with a longitudinal axis of the coil parallel a length axis of the core, wherein the antenna is configured to transmit power inductively to one or more receivers positioned in a distance of about 0.5 cm to about 50 cm in any direction around the antenna arrangement, wherein the magnet core contains a soft magnetic component made of finely divided particles and a plastic component as the composite material and wherein the magnet core has an effective initial permeability ranging between 30 and 100 as well as a saturation induction higher than 0.6 T.
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Accused Products
Abstract
An antenna arrangement for the inductive transmission of energy has magnetic cores made of a composite material with amorphous or nanocrystalline flakes and a moulded plastic material, so that the magnetic properties suitable for effective energy transmission can be adjusted at the same time as high security against fracture and a small overall height are achieved.
168 Citations
19 Claims
- 1. An antenna arrangement comprising an elongated magnet core and a cylindrical coil wound around the core, with a longitudinal axis of the coil parallel a length axis of the core, wherein the antenna is configured to transmit power inductively to one or more receivers positioned in a distance of about 0.5 cm to about 50 cm in any direction around the antenna arrangement, wherein the magnet core contains a soft magnetic component made of finely divided particles and a plastic component as the composite material and wherein the magnet core has an effective initial permeability ranging between 30 and 100 as well as a saturation induction higher than 0.6 T.
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15. An antenna arrangement comprising a magnet core and a cylindrical coil comprising several windings wound around the core, wherein the antenna is configured to transmit power inductively to one or more receivers positioned in a distance of about 0.5 cm to about 50 cm in any direction around the antenna arrangement, wherein the magnet core contains a soft magnetic component made of finely divided particles and a plastic component as the composite material and wherein the magnet core has an effective initial permeability ranging between 30 and 100 as well as a saturation induction higher than 0.6 T wherein the longitudinal axes of the windings are arranged at an angle greater than 0°
- to one another.
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16. A method of using an antenna for inductive power transmission, comprising the steps of:
- providing an elongated magnet core with a soft magnetic component made of finely divided particles and a plastic component as the composite material, wherein the magnet core has an effective initial permeability ranging between 30 and 100 as well as a saturation induction higher than 0.6 T;
winding a cylindrical coil around said magnet core with a longitudinal axis of the coil parallel a length axis of the core; and transmitting power inductively by means of said antenna to a receiver over a distance of about 0.5 cm to about 50 cm. - View Dependent Claims (17, 18, 19)
- providing an elongated magnet core with a soft magnetic component made of finely divided particles and a plastic component as the composite material, wherein the magnet core has an effective initial permeability ranging between 30 and 100 as well as a saturation induction higher than 0.6 T;
Specification