Antenna arrangement for inductive power transmission and use of the antenna arrangement

  • US 7,545,337 B2
  • Filed: 11/13/2006
  • Issued: 06/09/2009
  • Est. Priority Date: 05/13/2004
  • Status: Expired due to Fees
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First Claim
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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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